thumb|300px|Little Wolf/Little Coyote in Fort Laramie, in May 1868. Little Wolf (, sometimes transcribed Ohcumgache or Ohkomhakit, more correctly translated Little Coyote, 18201904) was a Northern Só
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c2a5b9c47306528564abd1386c51d9171978e27055b1c4451fa2594f918937f. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf6c4cd7-5768-4da1-93f1-5fc7b5f1de3c.json and https://artists.proofprofile.net/proofs/artist/cf6c4cd7-5768-4da1-93f1-5fc7b5f1de3c.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.