Amsterdam ZKProof event presentation.
scalable-privacy.{odp,pdf}, shards.{svg,png}, and nullifiers.{svg,png} are copyright
Daira Hopwood and Electric Coin Company under the MIT license.
ECC-icon-K.png is copyright Electric Coin Company, from the
ECC Media Kit.
The Twitter bird image is included under fair use.
Other images are edited from originals on irasutoya.com, copyright いらすとや, and are included under the irasutoya terms of use (ご利用規定).