{"reviewed":"2026-10-01","legal_advice":false,"note":"A tier is a constructor rule, not a counsel opinion.","components":[{"slug":"openzeppelin-contracts","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"viem","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"wagmi","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"ethers","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"foundry","license_record":"Apache-2.0 and MIT files both present","license_spdx":null,"licence_tier":"green","source_class":"S3"},{"slug":"scaffold-eth-2","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"ponder","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"alloy","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"reth","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"lighthouse","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"bitcoin-core","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"go-ethereum","license_record":"LGPL-3.0","license_spdx":"LGPL-3.0","licence_tier":"amber","source_class":"S3"},{"slug":"safe-smart-account","license_record":"LGPL-3.0","license_spdx":"LGPL-3.0","licence_tier":"amber","source_class":"S3"},{"slug":"chainlink-evm","license_record":"Mixed — portions, not a single SPDX grant","license_spdx":null,"licence_tier":"amber","source_class":"S3"},{"slug":"account-abstraction","license_record":"GPL-3.0","license_spdx":"GPL-3.0","licence_tier":"red","source_class":"S1"},{"slug":"walletconnect","license_record":"Custom — WalletConnect Community License Agreement","license_spdx":null,"licence_tier":"red","source_class":"S1"},{"slug":"hardhat","license_record":"NOASSERTION","license_spdx":null,"licence_tier":"grey","source_class":"S1"},{"slug":"cosmos-sdk","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"cometbft","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"hyperledger-fabric","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"rafiki","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"graph-node","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"go-libp2p","license_record":"MIT","license_spdx":"MIT","licence_tier":"green","source_class":"S3"},{"slug":"kubo","license_record":"MIT OR Apache-2.0, with a pre-2019 caveat","license_spdx":null,"licence_tier":"amber","source_class":"S3"},{"slug":"spruce-ssi","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"waltid","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"green","source_class":"S3"},{"slug":"anchor","license_record":"Apache-2.0","license_spdx":"Apache-2.0","licence_tier":"amber","source_class":"S3"}]}