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Numbers Network

Network Stack

Testnet: Snow (雪)

Add Network to MetaMask, one-click by Chainlist

  1. Network Name: Numbers Snow
  2. New RPC URL: https://testnetrpc.num.network
  3. Chain ID: 10508
  4. Currency Symbol: NUM
  5. Block Explorer URL: https://testnet.num.network
  6. Websocket RPC URL: wss://testnetrpc.num.network/ws
*-------------------------*-----------------------------------------------------------------------*
| PRIMARY P-CHAIN ADDRESS | P-fuji1lcztar3x7ra0ajen3dtw4mdhk2cyshfhu2hzgk                         |
*-------------------------*-----------------------------------------------------------------------*
| TOTAL P-CHAIN BALANCE   | 2.0910000 $AVAX                                                       |
*-------------------------*-----------------------------------------------------------------------*
| URI                     | https://api.avax-test.network                                         |
*-------------------------*-----------------------------------------------------------------------*
| NETWORK NAME            | fuji                                                                  |
*-------------------------*-----------------------------------------------------------------------*
| SUBNET VALIDATORS       | [24WK7qiKXAumya1kKEktwj2ubBbRyq5UW A2Z8m7egVLhKf1Qj14uvXadhExM5zrB7p] |
*-------------------------*-----------------------------------------------------------------------*
| SUBNET ID               | 81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe                     |
*-------------------------*-----------------------------------------------------------------------*
| BLOCKCHAIN ID           | 2oo5UvYgFQikM7KBsMXFQE3RQv3xAFFc8JY2GEBNBF1tp4JaeZ                    |
*-------------------------*-----------------------------------------------------------------------*
| CHAIN NAME              | captevm                                                               |
*-------------------------*-----------------------------------------------------------------------*
| VM ID                   | kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT                     |
*-------------------------*-----------------------------------------------------------------------*
| VM GENESIS PATH         | ../genesis/genesis-nativecoin-feemgr-feerecv.json                     |
*-------------------------*-----------------------------------------------------------------------*

Environment

  1. avalanchego: v1.12.0-fuji
  2. subnet-evm: v0.6.12

Mainnet: Jade (玉)

Add Network to MetaMask, one-click by Chainlist

  1. Network Name: Numbers Jade
  2. New RPC URL: https://mainnetrpc.num.network
  3. Chain ID: 10507
  4. Currency Symbol: NUM
  5. Block Explorer URL: https://mainnet.num.network
  6. Websocket RPC URL: wss://mainnetrpc.num.network/ws
*-------------------------*----------------------------------------------------*
| PRIMARY P-CHAIN ADDRESS | P-avax142ue2exu7qxuawxe34ww8t623lv82tu2vt573g      |
*-------------------------*----------------------------------------------------*
| TOTAL P-CHAIN BALANCE   | 6.9990000 $AVAX                                    |
*-------------------------*----------------------------------------------------*
| URI                     | https://api.avax.network                           |
*-------------------------*----------------------------------------------------*
| NETWORK NAME            | mainnet                                            |
*-------------------------*----------------------------------------------------*
| SUBNET VALIDATORS       | [BXTBUqX8gitUDtVam4fhRWGD1SfeHGoBx]                |
*-------------------------*----------------------------------------------------*
| SUBNET ID               | 2gHgAgyDHQv7jzFg6MxU2yyKq5NZBpwFLFeP8xX2E3gyK1SzSQ |
*-------------------------*----------------------------------------------------*
| BLOCKCHAIN ID           | 2PDRxzc6jMbZSTLb3sufkVszgQc2jtDnYZGtDTAAfom1CTwPsE |
*-------------------------*----------------------------------------------------*
| CHAIN NAME              | numbersevm                                         |
*-------------------------*----------------------------------------------------*
| VM ID                   | qeX7kcVMMkVLB9ZJKTpvtSjpLbtYooNEdpFzFShwRTFu76qdx  |
*-------------------------*----------------------------------------------------*
| VM GENESIS PATH         | ./genesis.json                                     |
*-------------------------*----------------------------------------------------*

Environment

  1. avalanchego: v1.12.0
  2. subnet-evm: v0.7.0

Avalanche Subnets

Concepts

  1. Avalanche's high-level components: Avalanche -> Subnets -> Chains -> VMs
  2. Every subnet / chain / vm has an unique ID.
  3. Blackhole: 0x0100000000000000000000000000000000000000, it is unchangeable.

Launch Node (avalanchego)

Check the official doc for launching a node (including AWS/GCP).

You can set optional custom configs by the --chain-config-dir parameter, and the default directory path is $HOME/.avalanchego/configs/chains/.

References

  1. Avalanchego Config and Flags
  2. Chain Configs
  3. Subnet Chain Configs

Create a Subnet

Create subnet by subnet-cli.

  1. subnet-cli uses the key specified in file $PWD/.subnet-cli.pk on the P-Chain to pay for the transaction fee.
  2. subnet-cli uses Fuji by default. To use mainnet, add --public-uri https://api.avax.network (details).
  3. Avalanche transaction fee lists the subnet action fees.
Command and result
ubuntu@ip-172-31-9-106:~/bafu$ ./wizard.sh                                                                                                         
2022-07-11T12:29:58.820Z        info    client/client.go:85     fetching X-Chain id             
2022-07-11T12:29:58.868Z        info    client/client.go:91     fetched X-Chain id      {"id": "2JVSBoinj9C2J33VntvzYtVJNZdN2NKiwwKjcumHUWEb5DbBrm"
}                                                                                                                                                  
2022-07-11T12:29:58.868Z        info    client/client.go:100    fetching AVAX asset id  {"uri": "https://api.avax-test.network"}
2022-07-11T12:29:58.886Z        info    client/client.go:109    fetched AVAX asset id   {"id": "U8iRqJoiJm8xZHAacmvYyZVwqQx6uDNtQeP3CQ6fcgQk3JqnK"}
2022-07-11T12:29:58.886Z        info    client/client.go:111    fetching network information
2022-07-11T12:29:58.905Z        info    client/client.go:120    fetched network information     {"networkId": 5, "networkName": "fuji"}            
                                                                                                                                                   
8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF is already a validator on 11111111111111111111111111111111LpoYY                                                  
                                                                                                                                                   
Ready to run wizard, should we continue?
*--------------------------*---------------------------------------------------*
| P-CHAIN ADDRESS          | P-fuji1lcztar3x7ra0ajen3dtw4mdhk2cyshfhu2hzgk     |
*--------------------------*---------------------------------------------------*
| P-CHAIN BALANCE          | 0.7980000 $AVAX                                   |
*--------------------------*---------------------------------------------------*
| TX FEE                   | 0.201 $AVAX                                       |
*--------------------------*---------------------------------------------------*
| REQUIRED BALANCE         | 0.201 $AVAX                                       |
*--------------------------*---------------------------------------------------*
| URI                      | https://api.avax-test.network                     |
*--------------------------*---------------------------------------------------*
| NETWORK NAME             | fuji                                              |
*--------------------------*---------------------------------------------------*
| NEW SUBNET VALIDATORS    | [8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF]               |
*--------------------------*---------------------------------------------------*
| SUBNET VALIDATION WEIGHT | 1,000                                             |
*--------------------------*---------------------------------------------------*
| CHAIN NAME               | captevm                                           |
*--------------------------*---------------------------------------------------*
| VM ID                    | kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT |
*--------------------------*---------------------------------------------------*
| VM GENESIS PATH          | genesis.json                                      |
*--------------------------*---------------------------------------------------*
âś” Yes, let's create! I agree to pay the fee!


2022-07-11T12:30:23.549Z        info    client/p.go:126 creating subnet {"dryMode": false, "assetId": "U8iRqJoiJm8xZHAacmvYyZVwqQx6uDNtQeP3CQ6fcgQk
3JqnK", "createSubnetTxFee": 100000000}
2022-07-11T12:30:23.637Z        info    platformvm/checker.go:73        polling subnet  {"subnetId": "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTc
eZcGG"}
2022-07-11T12:30:23.638Z        info    platformvm/checker.go:47        polling P-Chain tx      {"txId": "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDr
GMTceZcGG", "expectedStatus": "Committed"}
2022-07-11T12:30:23.638Z        info    poll/poll.go:42 start polling   {"internal": "1s"}
2022-07-11T12:30:25.680Z        info    poll/poll.go:66 poll confirmed  {"took": "2.042000706s"}
2022-07-11T12:30:25.680Z        info    platformvm/checker.go:87        finding subnets {"subnetId": "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTc
eZcGG"}
2022-07-11T12:30:25.681Z        info    poll/poll.go:42 start polling   {"internal": "1s"}
2022-07-11T12:30:25.731Z        info    poll/poll.go:66 poll confirmed  {"took": "50.443532ms"}
created subnet "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG" (took 2.092444238s)



Now, time for some config changes on your node(s).
Set --whitelisted-subnets=2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG and move the compiled VM kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdD
YuaT to <build-dir>/plugins/kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT.
When you're finished, restart your node.
âś” Yes, let's continue! I've updated --whitelisted-subnets, built my VM, and restarted my node(s)!


2022-07-11T12:31:13.342Z        info    client/p.go:294 adding subnet validator {"subnetId": "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG", 
"txFee": 1000000, "start": "2022-07-11T12:31:43.251Z", "end": "2022-08-01T11:08:55.000Z", "weight": 1000}
2022-07-11T12:31:13.486Z        info    platformvm/checker.go:47        polling P-Chain tx      {"txId": "2qdbUCiUtN6MYFyJwq8MW5WDyCjVM9hrneSTbkWAB
LpTAuUf1e", "expectedStatus": "Committed"}
2022-07-11T12:31:13.486Z        info    poll/poll.go:42 start polling   {"internal": "1s"}
2022-07-11T12:31:14.527Z        info    poll/poll.go:66 poll confirmed  {"took": "1.04094826s"}
added 8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF to subnet 2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG validator set (took 1.04094826s)

waiting for validator 8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF to start validating 2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG...(could take a few 
minutes)


2022-07-11T12:34:15.134Z        info    client/p.go:491 creating blockchain     {"subnetId": "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG", 
"chainName": "captevm", "vmId": "kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT", "createBlockchainTxFee": 100000000}
created blockchain "29YUizsFS9pFPvYjsSKB23M2QAooU1yCE2dfSw6pBhpL46SA18" (took 112.952603ms)

*-------------------*----------------------------------------------------*
| P-CHAIN ADDRESS   | P-fuji1lcztar3x7ra0ajen3dtw4mdhk2cyshfhu2hzgk      |
*-------------------*----------------------------------------------------*
| P-CHAIN BALANCE   | 0.6970000 $AVAX                                    |
*-------------------*----------------------------------------------------*
| URI               | https://api.avax-test.network                      |
*-------------------*----------------------------------------------------*
| NETWORK NAME      | fuji                                               |
*-------------------*----------------------------------------------------*
| SUBNET VALIDATORS | [8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF]                |
*-------------------*----------------------------------------------------*
| SUBNET ID         | 2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG |
*-------------------*----------------------------------------------------*
| BLOCKCHAIN ID     | 29YUizsFS9pFPvYjsSKB23M2QAooU1yCE2dfSw6pBhpL46SA18 |
*-------------------*----------------------------------------------------*
| CHAIN NAME        | captevm                                            |
*-------------------*----------------------------------------------------*
| VM ID             | kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT  |
*-------------------*----------------------------------------------------*
| VM GENESIS PATH   | genesis.json                                       |
*-------------------*----------------------------------------------------*

Check blockchain information by platform.getBlockchains:

{
  "id": "29YUizsFS9pFPvYjsSKB23M2QAooU1yCE2dfSw6pBhpL46SA18",
  "name": "captevm",
  "subnetID": "2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG",
  "vmID": "kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT"
}

Add validator to subnet

Command and result
ubuntu@ip-172-31-9-106:~/bafu$ ./subnet-cli-add-subnet-validator.sh 
2022-07-11T11:14:14.608Z        info    client/client.go:85     fetching X-Chain id
2022-07-11T11:14:14.843Z        info    client/client.go:91     fetched X-Chain id      {"id": "2JVSBoinj9C2J33VntvzYtVJNZdN2NKiwwKjcumHUWEb5DbBrm"}
2022-07-11T11:14:14.843Z        info    client/client.go:100    fetching AVAX asset id  {"uri": "https://api.avax-test.network"}
2022-07-11T11:14:14.862Z        info    client/client.go:109    fetched AVAX asset id   {"id": "U8iRqJoiJm8xZHAacmvYyZVwqQx6uDNtQeP3CQ6fcgQk3JqnK"}2022-07-11T11:14:14.862Z        info    client/client.go:111    fetching network information
2022-07-11T11:14:14.878Z        info    client/client.go:120    fetched network information     {"networkId": 5, "networkName": "fuji"}

Ready to add subnet validator, should we continue?
*------------------*---------------------------------------------------*
| P-CHAIN ADDRESS  | P-fuji1lcztar3x7ra0ajen3dtw4mdhk2cyshfhu2hzgk     |
*------------------*---------------------------------------------------*
| P-CHAIN BALANCE  | 0.7990000 $AVAX                                   |
*------------------*---------------------------------------------------*
| TX FEE           | 0.001 $AVAX                                       |
*------------------*---------------------------------------------------*
| REQUIRED BALANCE | 0.001 $AVAX                                       |
*------------------*---------------------------------------------------*
| URI              | https://api.avax-test.network                     |
*------------------*---------------------------------------------------*
| NETWORK NAME     | fuji                                              |
*------------------*---------------------------------------------------*
| NODE IDs         | [8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF]               |
*------------------*---------------------------------------------------*
| SUBNET ID        | GBEwakER8HzKT7U2mWuVafxTTAMYVQnDXeT92NcCVt4gwfLUL |
*------------------*---------------------------------------------------*
| VALIDATE WEIGHT  | 1,000                                             |
*------------------*---------------------------------------------------*
âś” Yes, let's create! I agree to pay the fee!



2022-07-11T11:14:32.624Z        info    client/p.go:294 adding subnet validator {"subnetId": "GBEwakER8HzKT7U2mWuVafxTTAMYVQnDXeT92NcCVt4gwfLUL", "txFee": 1000000, "start": "2022-07-11T11:15:02.564Z", "end": "2022-08-01T11:08:55.000Z", "weight": 1000}
2022-07-11T11:14:32.741Z        info    platformvm/checker.go:47        polling P-Chain tx      {"txId": "2Hptsj3d3YxF1riZTG9aFHFrjqNMWfpGmPFyHevSSaUDsob4uy", "expectedStatus": "Committed"}
2022-07-11T11:14:32.742Z        info    poll/poll.go:42 start polling   {"internal": "1s"}
2022-07-11T11:14:34.782Z        info    poll/poll.go:66 poll confirmed  {"took": "2.040226592s"}
added 8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF to subnet GBEwakER8HzKT7U2mWuVafxTTAMYVQnDXeT92NcCVt4gwfLUL validator set (took 2.040226592s)

waiting for validator 8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF to start validating GBEwakER8HzKT7U2mWuVafxTTAMYVQnDXeT92NcCVt4gwfLUL...(could take a few minutes)
*------------------*---------------------------------------------------*
| P-CHAIN ADDRESS  | P-fuji1lcztar3x7ra0ajen3dtw4mdhk2cyshfhu2hzgk     |
*------------------*---------------------------------------------------*
| P-CHAIN BALANCE  | 0.7980000 $AVAX                                   |
*------------------*---------------------------------------------------*
| URI              | https://api.avax-test.network                     |
*------------------*---------------------------------------------------*
| NETWORK NAME     | fuji                                              |
*------------------*---------------------------------------------------*
| NODE IDs         | [8CGJYaRLChC79CCRnvd7sh5eB9E9L9dVF]               |
*------------------*---------------------------------------------------*
| SUBNET ID        | GBEwakER8HzKT7U2mWuVafxTTAMYVQnDXeT92NcCVt4gwfLUL |
*------------------*---------------------------------------------------*
| VALIDATE START   | 2022-07-11T11:15:02Z                              |
*------------------*---------------------------------------------------*
| VALIDATE END     | 2022-08-01T11:08:55Z                              |
*------------------*---------------------------------------------------*
| VALIDATE WEIGHT  | 1,000                                             |
*------------------*---------------------------------------------------*

Launch validator. When running avalanchego, add

  • -—http-host=0.0.0.0: Make MetaMask can access the RPC URL
  • --http-allowed-hosts="*": Allow traffic from the RPC node (since v1.10.3)
./avalanchego \
    --track-subnets=81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe\
    --network-id=fuji \
    --http-host=0.0.0.0 \
    --http-allowed-hosts="*" \
    --public-ip=<node-public-ip>

Add Validator to Subnet

High-level concepts

  1. Make a node as validator
    1. Visit wallet.avax.network
    2. Follow the steps in this official doc.
      1. Ensure there is sufficient balance on P-Chain.
  2. Add the validator to the subnet
    1. Ues subnet admin to run subnet-cli. Find the Subnet admin in the Subnets section below.

      1. In general, you will run subnet-cli on your notebook instead of validator nodes.
      2. You can use avalanchego-api-scripts/subnet-cli/install-subnet-cli-testnet.sh to install.
    2. Run the command

      # testnet
      subnet-cli add subnet-validator \
          --node-ids="NodeID-7TwAjiRpTbNcqUx6F9EoyXRBLAfeoQXRq" \
          --subnet-id="81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe"
      
      # mainnet
      subnet-cli add subnet-validator \
          --node-ids="NodeID-BXTBUqX8gitUDtVam4fhRWGD1SfeHGoBx" \
          --subnet-id="2gHgAgyDHQv7jzFg6MxU2yyKq5NZBpwFLFeP8xX2E3gyK1SzSQ" \
          --public-uri "https://api.avax.network"
    3. subnet-cli will find private key from $PWD/.subnet-cli.pk by default.

    4. The wallet needs to have 0.001 AVAX at least on P-Chain (Fuji).

If you see Error: validator not found when adding a validator to subnet and confirmed that you've re-staked successfully, you can check if the node is running as P-Chain validator by checking the node's explorer page: https://subnets-test.avax.network/validators/NodeID-<node-id>. After re-staking, P-Chain needs minutes to update the validator status.

Renew Validator

If the validator's staking duration is expired, the staking amount and rewards will be sent to the staking wallet on P-Chain automatically. You can follow the same steps above to add it as a validator again.

Before validation staking expires, any wallet can not stake to a validator again. If you try to do so on wallet.avax.network, you will get the error message

couldn't issue tx: attempted to issue duplicate validation for NodeID-A2Z8m7egVLhKf1Qj14uvXadhExM5zrB7p

Validator version distributions: mainnet, testnet

Renew Numbers Validators (internal task)

BLS Public Key and BLS Signature

If you're asked to provide BLS Public Key and BLS Signature, you can get them by running the following command on the validator node:

curl -X POST --data '{
    "jsonrpc":"2.0",
    "id"     :1,
    "method" :"info.getNodeID"
}' -H 'content-type:application/json;' 127.0.0.1:9650/ext/info

It should return something like this.

{
  "jsonrpc": "2.0",
  "result": {
    "nodeID": "NodeID-5mb46qkSBj81k9g9e4VFjGGSbaaSLFRzD",
    "nodePOP": {
      "publicKey": "0x8f95423f7142d00a48e1014a3de8d28907d420dc33b3052a6dee03a3f2941a393c2351e354704ca66a3fc29870282e15",
      "proofOfPossession": "0x86a3ab4c45cfe31cae34c1d06f212434ac71b1be6cfe046c80c162e057614a94a5bc9f1ded1a7029deb0ba4ca7c9b71411e293438691be79c2dbf19d1ca7c3eadb9c756246fc5de5b7b89511c7d7302ae051d9e03d7991138299b5ed6a570a98"
    }
  },
  "id": 1
}

The publicKey is your BLS Public Key, and proofOfPossession is your BLS Signature. Avalanche uses your public key as the signing message (source 1, source 2).

RPC

MetaMask RPC rule: http://NodeIPAddress:9650/ext/bc/BlockchainID/rpc

Set RPC

Use Nginx as RPC load balancer.

$ vim /etc/nginx/sites-available/default

Test RPC

Test POST on the RPC node locally:

$ cat check_version.sh
#!/bin/bash

curl -X POST --data '{
    "jsonrpc": "2.0",
    "id": 10508,
    "method": "eth_chainId"
}' -H "Content-Type: application/json" http://localhost

Testing result:

$ ./check_version.sh
{"jsonrpc":"2.0","id":10508,"result":"0x290c"}

Upgrade Node (avalanchego)

Upgrade Your AvalancheGo Node

  1. Backup node

    cd
    cp ~/.avalanchego/staking/staker.crt .
    cp ~/.avalanchego/staking/staker.key .
  2. Download pre-build avalanchego and subnet-evm

  3. Copy subnet-evm binary to avalanchego/plugins/<vmid>

  4. Stop the running avalanchego

  5. Start the new avalanchego

Notes

  1. When upgrading node, you need to upgrade EVM and plugins as well.

    jpop32 — 05/12/2021 Plugin is the part of the installation. And it has to be upgraded along with the main executable, yes.

Since avalanchego v1.9.6, there are two breaking changes

  1. There is no avalanchego/plugins/evm (Subnet EVM) because it has been merged into avalanchego directly.
  2. The default plugins directory is ~/.avalanchego/plugins/
$ tree avalanchego-v1.9.6
avalanchego-v1.9.6
└── avalanchego

$ tree ~/.avalanchego/plugins/
/home/<account>/.avalanchego/plugins/
└── kmYb53NrmqcW7gfV2FGHBHWXNA6YhhWf7R7LoQeGj9mdDYuaT

Update subnet-evm

  1. Download the latest pre-built binary on subnet-evm GitHub.
  2. Copy the subnet-evm binary to ~/.avalanchego/plugins/<vmID>
  3. Restart node (avalanchego)

Updating Utilities

See chains/update-validator-{mainnet,testnet}.sh.

Network Upgrades: Enable/Disable Precompiles

  1. https://docs.avax.network/subnets/customize-a-subnet#network-upgrades-enabledisable-precompiles
  2. ava-labs/subnet-evm#177 (comment)

Customize Subnet and EVM

Each blockchain has some genesis state when it’s created. Each Virtual Machine defines the format and semantics of its genesis data.

Config directory structure

$ tree ~/.avalanchego/configs/
/home/ubuntu/.avalanchego/configs/
├── chains
│   └── 29YUizsFS9pFPvYjsSKB23M2QAooU1yCE2dfSw6pBhpL46SA18
│       └── config.json
└── subnets
    └── 2fQBahhq3F9eip8KobMgjbvBEahW3153kvAy6YPDrGMTceZcGG.json

Tips

  1. After updating config.json, avalanchego needs to be restarted.
  2. If you add fee recipient, the fee recipient will get 100% gas fee.

References

  1. https://docs.avax.network/subnets/customize-a-subnet
  2. https://github.com/ava-labs/subnet-evm/tree/master/contract-examples

Precompile: Minting Native Coins

> contract = await ethers.getContractAt("NativeMinterInterface", "0x0200000000000000000000000000000000000001")

> [admin] = await ethers.getSigners()

> await admin.getBalance()
BigNumber { value: "99999999999845284000000300" }

> r = await contract.mintNativeCoin(admin.address, 100)

> await admin.getBalance()
BigNumber { value: "99999999999793712000000400" }

Check the official doc for the details.

Check Minting Amount

Example Tx

data

0x4f5aaaba0000000000000000000000008cba0477d89394e6d8ad658e11d52113a2da4ab20000000000000000000000000000000000000000001acff4350c4a1576280000

decode

Signature (Method ID): 0x4f5aaaba
[0]: 0000000000000000000000008cba0477d89394e6d8ad658e11d52113a2da4ab2
[1]: 0000000000000000000000000000000000000000001acff4350c4a1576280000

decode [1], the result is 32414106000000000000000000 (32,414,106 in Wei).

Precompile: Configuring dynamic fees

> fm = await ethers.getContractAt("IFeeManager", "0x0200000000000000000000000000000000000003")

> await fm.getFeeConfig()
[
  BigNumber { value: "20000000" },
  BigNumber { value: "2" },
  BigNumber { value: "1000000000" },
  BigNumber { value: "100000000" },
  BigNumber { value: "48" },
  BigNumber { value: "0" },
  BigNumber { value: "10000000" },
  BigNumber { value: "500000" },
  gasLimit: BigNumber { value: "20000000" },
  targetBlockRate: BigNumber { value: "2" },
  minBaseFee: BigNumber { value: "1000000000" },
  targetGas: BigNumber { value: "100000000" },
  baseFeeChangeDenominator: BigNumber { value: "48" },
  minBlockGasCost: BigNumber { value: "0" },
  maxBlockGasCost: BigNumber { value: "10000000" },
  blockGasCostStep: BigNumber { value: "500000" }
]

> await fm.setFeeConfig(20000000, 2, 1000000000, 100000000, 48, 0, 10000000, 500000)

> await fm.getFeeConfig()
[
  BigNumber { value: "20000000" },
  BigNumber { value: "2" },
  BigNumber { value: "2000000000" },
  BigNumber { value: "100000000" },
  BigNumber { value: "48" },
  BigNumber { value: "0" },
  BigNumber { value: "10000000" },
  BigNumber { value: "500000" },
  gasLimit: BigNumber { value: "20000000" },
  targetBlockRate: BigNumber { value: "2" },
  minBaseFee: BigNumber { value: "2000000000" },
  targetGas: BigNumber { value: "100000000" },
  baseFeeChangeDenominator: BigNumber { value: "48" },
  minBlockGasCost: BigNumber { value: "0" },
  maxBlockGasCost: BigNumber { value: "10000000" },
  blockGasCostStep: BigNumber { value: "500000" }
]

Check the official doc for the details.

Precompile: Restricting Smart Contract Deployers

> contract = await ethers.getContractAt("IAllowList", "0x0200000000000000000000000000000000000000")

> [admin, test] = await ethers.getSigners()

# 0: None, 1: Enabled, 2: Admin
> await contract.readAllowList(admin.address)
BigNumber { value: "2" }

> await contract.readAllowList(test.address)
BigNumber { value: "0" }

> await contract.setEnabled(test.address)
{
  hash: '0xd117e990e85c2428a620f9bd834b0597db1648f3d2fa5899d929fd1701d46e01',
  type: 0,
  accessList: null,
  blockHash: '0xf6063f0c5e86ab4efaf970e901ca3f5be3335ec61ab8f50fc075a6915f5e19e5',
  blockNumber: 5,
  transactionIndex: 0,
  confirmations: 1,
  from: '0x8Cba0477d89394E6d8aD658E11d52113A2DA4Ab2',
  gasPrice: BigNumber { value: "100000000000" },
  gasLimit: BigNumber { value: "41432" },
  to: '0x0200000000000000000000000000000000000000',
  value: BigNumber { value: "0" },
  nonce: 2,
  data: '0x0aaf704300000000000000000000000063b7076fc0a914af543c2e5c201df6c29fcc18c5',
  r: '0x01e0c663a55757e12237f001811cab7a610c3ebfeba99ac9f0e29cbe4f4bd5ed',
  s: '0x38b126e31bb8ee608e45554956c9a6eefb091961755283f9dff69964c2512f41',
  v: 21049,
  creates: null,
  chainId: 10507,
  wait: [Function (anonymous)]
}

> await contract.readAllowList(test.address)
BigNumber { value: "1" }

Check the official doc for the details.

Admin

avalanchego-api-scripts is the admin toolkit.

Confirm Updated Node Is Working

Node will show "consensus starting" for both C-Chain and P-Chain:

[10-02|06:32:32.114] INFO <C Chain> snowman/transitive.go:401 consensus starting {"lastAcceptedBlock": "2L56FDEYAemMKTJ2uD1MnGpC1pC2WBgeNtwyjh6AhgTffvCWR2"}
[10-02|06:32:32.117] INFO <P Chain> snowman/transitive.go:401 consensus starting {"lastAcceptedBlock": "22egidV1exdWT8ckaAf8dv9YiWAs2ESmY2NmtJUwNqBGCyNef2"}
[10-02|06:32:41.919] INFO <X Chain> avalanche/transitive.go:346 consensus starting {"lenFrontier": 1}

Now, you can check if the Node is running normally.

Confirm Node Is Working

$ cd ~/avalanchego-api-scripts/api
$ watch -n 5 ./info.isBootstrapped.sh X
$ watch -n 5 ./info.isBootstrapped.sh 2oo5UvYgFQikM7KBsMXFQE3RQv3xAFFc8JY2GEBNBF1tp4JaeZ
$ watch -n 5 ./health.health.sh

# Show validators by giving the Subnet ID
$ ./platform.getCurrentValidators.sh 81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe | jq .
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  1318  100  1139  100   179  21189   3330 --:--:-- --:--:-- --:--:-- 24867
{
  "jsonrpc": "2.0",
  "result": {
    "validators": [
      {
        "txID": "QWwjVDJTX2pSYxi5oNk51VeZaZPip9jZnSVhLqipgKMRJDxFP",
        "startTime": "1662288001",
        "endTime": "1677599993",
        "stakeAmount": "1000",
        "nodeID": "NodeID-7TwAjiRpTbNcqUx6F9EoyXRBLAfeoQXRq",
        "connected": true,
        "uptime": "1.0000"
      },
      {
        "txID": "2cfHmfw29UBCjMDTRb9RwistPFekmHzEdfpNci1TLLeoMdtckZ",
        "startTime": "1662363248",
        "endTime": "1680278397",
        "stakeAmount": "1000",
        "nodeID": "NodeID-JbeonHKqomERomXgCiXr9oC9vfynkBupj",
        "connected": true,
        "uptime": "1.0000"
      },
      {
        "txID": "2PqA6BE5wiA5iE9yZeMsfaSag4pT5U1uxMMGyia1HCF6SEUNRe",
        "startTime": "1662364392",
        "endTime": "1682870344",
        "stakeAmount": "1000",
        "nodeID": "NodeID-BffXkmzM8EwrBZgpqFp9pwgE9DbDgYKG2",
        "connected": true,
        "uptime": "1.0000"
      },
      {
        "txID": "26mBFfgiFTz3eFo1QAmvMiBpfTtmgMvzPJ2eB5V6WjK2CkTcuJ",
        "startTime": "1667294891",
        "endTime": "1685548750",
        "stakeAmount": "1000",
        "nodeID": "NodeID-24WK7qiKXAumya1kKEktwj2ubBbRyq5UW",
        "connected": true,
        "uptime": "1.0000"
      },
      {
        "txID": "kApLebvYz54fRratWmWqEttbNktbCDQMK93mDmr1rm9w64gDU",
        "startTime": "1669827497",
        "endTime": "1688140751",
        "stakeAmount": "1000",
        "nodeID": "NodeID-A2Z8m7egVLhKf1Qj14uvXadhExM5zrB7p",
        "connected": true,
        "uptime": "1.0000"
      }
    ]
  },
  "id": 1
}

Using info.peers to check all the nodes and versions in a subnet. The nodes might not be validators. The node running the command will not be listed in the result. Remember to add --public-ip=<public-ip> when running avalanchego. Check public IPs are correct and uptimes are > 98.

$ ./info.peers.sh  | jq .
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100  2027  100  1661  100   366   435k  98255 --:--:-- --:--:-- --:--:--  659k
{
  "jsonrpc": "2.0",
  "result": {
    "numPeers": "4",
    "peers": [
      ...
      {
        "ip": "<private-or-public-ip-and-port>",
        "publicIP": "private-ip-and-port",
        "nodeID": "NodeID-A2Z8m7egVLhKf1Qj14uvXadhExM5zrB7p",
        "version": "avalanche/1.9.4",
        "lastSent": "2023-01-27T17:03:56Z",
        "lastReceived": "2023-01-27T17:03:52Z",
        "observedUptime": "99",
        "observedSubnetUptimes": {
          "81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe": "99"
        },
        "trackedSubnets": [
          "81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe"
        ],
        "benched": []
      }
    ]
  },
  "id": 1
}

HTTPS RPC Provider

Concept: Nginx with Certbot as reverse proxy redirects RPC requests to the validators.

Websocket RPC Provider

Concept: Nginx with Certbot as reverse proxy redirects RPC requests to the websocket endpoint of validators.

Websocket log subscription example using Python:

pip3 install websockets
import asyncio
import json

from websockets import connect


async def get_event():
    async with connect('wss://testnetrpc.num.network/ws') as ws:
        await ws.send('{"jsonrpc":"2.0", "id": 1, "method": "eth_subscribe", "params": ["logs", {"topics": []}]}')
        subscription_response = await ws.recv()
        print(subscription_response)
        while True:
            try:
                message = await asyncio.wait_for(ws.recv(), timeout=60)
                print(json.loads(message))
            except asyncio.TimeoutError:
                pass
            except Exception as e:
                print(f'Error: {e}')
                break


if __name__ == '__main__':
    asyncio.run(get_event())

Self-Hosted Faucet

https://faucet.num.network

  1. Create product build.

    1. Copy .env to build/ where product server.ts is there.
  2. Copy build/client/* to /var/www/html/faucet/.

  3. Update Nginx config.

    +upstream faucet {
    +        server localhost:8000
    +}
    ...
    -        root /var/www/html;
    +        root /var/www/html/faucet;
    ...
    +        location /api/ {
    +                proxy_pass http://faucet
    +        }
    
  4. Run product server: npm start

  5. Utility commands

    $ sudo service nginx configtest
    $ sudo service nginx reload
    

Wrapped NUM

We completed a technical survey and verified some concepts on the testnet.

If you are interested in wrapped ERC20 token, refer to canonical-wnum.

Bridge

To bridge native NUM to ERC20/BEP20 NUM, you can use XY Finance (audit report).

To know more about NUM token, you can visit the NUM token website.

Archieve Node

Archive Node provides full history of the blockchain and does not need to be a validator.

Running an Archival Node

Make a Full Node instance to be an Archive Node instance:

  1. Create an instance from full node image

  2. Increase disk space to 2TB

  3. Delete ~/.avalanchego/staking/*

  4. Update network config

    • mainnet: ~/.avalanchego/configs/chains/2PDRxzc6jMbZSTLb3sufkVszgQc2jtDnYZGtDTAAfom1CTwPsE/config.json
    • testnet: ~/.avalanchego/configs/chains/2oo5UvYgFQikM7KBsMXFQE3RQv3xAFFc8JY2GEBNBF1tp4JaeZ/config.json
    {
        "pruning-enabled": false,
        # newly added content
        "eth-apis": [
            "eth",
            "eth-filter",
            "net",
            "web3",
            "internal-eth",
            "internal-blockchain",
            "internal-transaction",
            "debug-tracer"
        ]
    }
  5. Run an Archive Node by avalanchego

    Run an archive node for mainnet

    #!/bin/sh
    
    # Subnet IDs
    SUBNET_MAINNET="2gHgAgyDHQv7jzFg6MxU2yyKq5NZBpwFLFeP8xX2E3gyK1SzSQ"
    
    ./avalanchego \
        --track-subnets=${SUBNET_MAINNET} \
        --http-host=0.0.0.0 \
        --public-ip=<node-public-ip> \
        --http-allowed-hosts="*"

    Run an archive node for testnet

    #!/bin/sh
    
    # Subnet IDs
    SUBNET_MAINNET="81vK49Udih5qmEzU7opx3Zg9AnB33F2oqUTQKuaoWgCvFUWQe"
    
    ./avalanchego \
        --track-subnets=${SUBNET_MAINNET} \
        --http-host=0.0.0.0 \
        --public-ip=<node-public-ip> \
        --http-allowed-hosts="*"
  6. (optional) Test an Archive Node

    Run the commands on the Archive Node's instances for testing it's working as Archive Node.

    For mainnet

    $ curl http://localhost:9650/ext/bc/2PDRxzc6jMbZSTLb3sufkVszgQc2jtDnYZGtDTAAfom1CTwPsE/rpc \
         -X POST \
         -H "Content-Type: application/json" \
        --data '{"method":"debug_traceTransaction","params":["0x9a241e580d29d90d890316559d055c0df5cc7203be43b166d63c51de2218efc8"],"id":1,"jsonrpc":"2.0"}'

    For testnet

    $ curl http://localhost:9650/ext/bc/2oo5UvYgFQikM7KBsMXFQE3RQv3xAFFc8JY2GEBNBF1tp4JaeZ/rpc \
         -X POST \
         -H "Content-Type: application/json" \
        --data '{"method":"debug_traceTransaction","params":["0x7d2dec6c3e7ce2a387d988a0603ce7de6d487d6aeaf6b58eabdb123161cee0a2"],"id":1,"jsonrpc":"2.0"}'

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