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ICP Developer Docs

Token Standards

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Reference for ICP token standards. Document ICRC-1 (fungible token transfers, balances, metadata), ICRC-2 (approve/transferFrom), ICRC-3 (transaction log/history), ICRC-7 (NFT standard), and related standards (ICRC-21/25/27/29/49 for wallet signers). Include standard interfaces, canonical ledger canister IDs, and compliance requirements.

  • Portal: defi/tokens/token-standards files
  • icskills: icrc-ledger, wallet-integration
  • guides/defi/token-ledgers — practical token operations
  • guides/authentication/wallet-integration — ICRC signer standards
  • guides/defi/chain-key-tokens — ckBTC/ckETH are ICRC-1 tokens