[CONTRACT] define smart contract interface

[1Mateus]

Define the interface (methods, parameters and return values) that the contract is going to have so that SDK and Smart Contract can be developed in parallel.

[veigajoao]

Merkle trees em contratos:

1. tornado cash: https://github.com/tornadocash/tornado-core/blob/master/contracts/MerkleTreeWithHistory.sol
2. hideyour.cash: https://github.com/hideyour-cash/hideyour-cash/blob/main/packages/contracts/instance/src/commitment_tree.rs

Pedersen hash em contratos: https://github.com/zeropoolnetwork/zeropool-core/blob/master/circom/circuits/lib/poseidon.circom

Como criptografar mensagens usando a chave privada da Kadena.

Familiarizar com tutoriais de smart contracts do pact.

[veigajoao]

https://github.com/hideyour-cash/hideyour-cash/tree/main/packages/contract-libraries/near_mimc

[veigajoao]

https://github.com/tornadocash/tornado-nova/tree/master

[veigajoao]

Transact function - função para depositar ou sacar

Emit event - new UTXO - commit da UTXO, forma encriptada dela, index na merkle tree

[veigajoao]

https://github.com/kadena-io/KIPs/tree/master/kip-0002

[veigajoao]

https://marmalade.art/
https://medium.com/kadena-io/introducing-marmalade-v2-empowering-the-future-of-nfts-33ad2f3c94e8

[veigajoao]

https://github.com/kadena-io/KIPs/blob/master/kip-0005.md

[veigajoao]

https://github.com/kadena-io/KIPs/tree/master/kip-0011

[veigajoao]

Kadena native token: https://medium.com/kadena-io/kadena-public-blockchain-getting-started-with-transfers-153bf87d6824