{"slug":"api-duoleads-com-v1-chain-address-703ea3","title":"Identify which blockchain an address belongs to and validate its encoding","host":"api.duoleads.com","method":"GET","resource":"https://api.duoleads.com/v1/chain/address","category":"market","description":"Identify which blockchain an address belongs to and validate its encoding: EVM EIP-55 checksum, Bitcoin base58check and bech32/bech32m with witness version, Solana base58 and on-curve check, Cosmos bech32 with its HRP, Tron, XRP, Litecoin, Dogecoin, Cardano, Polkadot SS58 and Algorand. Returns the d","price_listed":0.05,"price_asked":0.05,"state":"answering","state_label":"Answering","checks_7d":1,"answered_7d":1,"latency_ms_median":21,"reported_calls_30d":1,"reported_payers_30d":1,"networks":["eip155:8453"],"badge":"unverified","paid_checks_7d":0,"paid_ok_7d":0,"example_input":{"method":"GET","queryParams":{"address":"0xd8da6bf26964af9d7eed9e03e53415d37aa96045"},"type":"http"},"output_schema":{"$schema":"https://json-schema.org/draft/2020-12/schema","properties":{"input":{"additionalProperties":false,"properties":{"method":{"enum":["GET"],"type":"string"},"queryParams":{"properties":{"address":{"description":"Address to identify and validate.","maxLength":128,"type":"string"},"chain_id":{"description":"EVM chain id; enables EIP-1191 chain-salted checksum validation.","maxLength":64,"pattern":"^[+-]?\\d+$","type":"string"},"expect":{"description":"Restrict the check to one chain id.","enum":["evm","bitcoin","solana","cosmos","tron","xrp","cardano","polkadot","algorand","litecoin","dogecoin"],"maxLength":64,"type":"string"}},"required":["address"],"type":"object"},"type":{"const":"http","type":"string"}},"required":["type","method"],"type":"object"},"output":{"properties":{"example":{"properties":{"data":{"type":"object"},"meta":{"properties":{"computed_at":{"type":"string"},"deterministic":{"type":"boolean"},"disclaimer":{"type":"string"},"price_usd":{"type":"string"},"request_id":{"type":"string"},"sources":{"type":"array"}},"required":["request_id","computed_at","price_usd","deterministic","disclaimer"],"type":"object"},"ok":{"const":true,"type":"boolean"},"route":{"type":"string"},"version":{"type":"string"}},"required":["ok","route","version","data","meta"],"type":"object"},"type":{"type":"string"}},"required":["type"],"type":"object"}},"required":["input"],"type":"object"},"history":[{"day":"2026-09-29","reachable":true,"status":402,"valid_402":true,"asked_usdc":0.05,"price_match":true,"latency_ms":21,"error":null}],"description_full":"Identify which blockchain an address belongs to and validate its encoding: EVM EIP-55 checksum, Bitcoin base58check and bech32/bech32m with witness version, Solana base58 and on-curve check, Cosmos bech32 with its HRP, Tron, XRP, Litecoin, Dogecoin, Cardano, Polkadot SS58 and Algorand. Returns the detected chains with a confidence note, the checksummed form for EVM addresses, and the exact reason an address failed.","last_updated":"2026-09-28T23:39:18.603Z","schemes":["exact"]}