ERCs, Solved
long-form, one standard per page

ERC Explainers.

Reference pages for the Ethereum token and account standards developers actually ship against. Each one explains what the standard is, where its author left gaps, and the LUKSO LSP that was designed to handle the gap.

  1. ERC-20 ERC-20 The token standard that ate Ethereum — and what its author built next.
  2. ERC-721 ERC-721 Ethereum's non-fungible token standard — and the gaps a minimum interface left to integrators.
  3. ERC-1155 ERC-1155 The multi-token standard that compressed assets into IDs — and pushed semantics into every integration.
  4. ERC-4337 ERC-4337 Account abstraction, layered above the protocol — and the cost of that choice.
  5. EIP-7702 EIP-7702 The protocol patch that lets EOAs borrow smart-account behavior — without removing the EOA root key.
  6. topic Gasless Transactions Sponsored execution — the consumer-app UX every wallet has been promising. And why it hasn't broken through.
  7. ERC-4626 ERC-4626 The vault standard that made yield-bearing ERC-20 shares composable — without standardizing the strategy inside.
  8. topic ERC-20 Allowance The DeFi primitive that turns one approval into a standing permission.
  9. ERC-2612 ERC-2612 Gasless ERC-20 approval by signature - useful, but still allowance.
  10. topic Permit2 A shared approval router for ERC-20 UX - powerful, and very load-bearing.
  11. topic ERC-721A The NFT mint optimization everyone calls an ERC, even though it is an implementation.
  12. ERC-2981 ERC-2981 NFT royalties as a discovery signal, not an enforcement mechanism.
  13. ERC-4906 ERC-4906 The refresh-metadata button, turned into an event.
  14. ERC-6551 ERC-6551 NFTs with accounts attached - powerful, but another account layer.
  15. ERC-165 ERC-165 The tiny function behind interface detection for NFTs, multi-tokens, royalties, and LSPs.
  16. ERC-1271 ERC-1271 The signature standard for smart accounts, multisigs, and contract wallets.
  17. ERC-777 ERC-777 The fungible-token hook standard that exposed how hard receiver callbacks are to retrofit.
  18. ERC-1363 ERC-1363 ERC-20 with callback functions for payments and approvals.
  19. topic Ethereum Token Standards A map of the token standards Ethereum apps actually meet in production.