Airdrop Contratメモ

1. マークルツリーを利用した実装

UNI
https://etherscan.io/address/0x090d4613473dee047c3f2706764f49e0821d256e#code

1INCH
https://etherscan.io/address/0xe295ad71242373c37c5fda7b57f26f9ea1088afe#code

POINT
https://etherscan.io/address/0xf45ba58c415ed6c77cfc157f42f300f9fd980985#code

AXS
https://etherscan.io/address/0x93a0d0b23c3d045f395e26850c1b64df7f3ab783#code

DYDX(複数Proxyを利用してAirdrop以降のclaimでも利用されている)
https://etherscan.io/address/0x0fd829c3365a225fb9226e75c97c3a114bd3199e#code

ENS
https://etherscan.io/address/0xc18360217d8f7ab5e7c516566761ea12ce7f9d72#code

RBN
https://etherscan.io/address/0x7902e4bfb1eb9f4559d55417aee1dc6e4b8cc1bf#code

LOOKS(2のECDSAも利用されている)
https://etherscan.io/address/0xa35dce3e0e6ceb67a30b8d7f4aee721c949b5970#code

2. ECDSAを利用した実装

RARI
https://etherscan.io/address/0x3b5d2B254224954547A33CbF753BcaA5eB4B27bd#code

SOS
https://etherscan.io/address/0x3b484b82567a09e2588a13d54d032153f0c0aee0#code

TKNFY
https://etherscan.io/address/0xa6dd98031551c23bb4a2fbe2c4d524e8f737c6f7#code

参考

https://docs.openzeppelin.com/contracts/4.x/api/utils#cryptography
https://zenn.dev/serinuntius/articles/35c1b6a042174e847766
https://www.npmjs.com/package/merkletreejs
https://zoom-blc.com/what-is-ecdsa