thumb|Short story of Owo in Owo dialect by a native speaker Owo is a local government area in Ondo state, Nigeria. Between 1400 and 1600 CE, it was the capital of a Yoruba city-state. The local govern
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 0x36502489b9ad0aea6e0020179776ebe7a9a648d40d9a35eda273ab760150119a. Chain 2 (Bitcoin): anchored in block 953864 (2026-06-16T00:30:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/05225781-be0b-4df2-974a-8afa9ffa8729.json and https://artists.proofprofile.net/proofs/artist/05225781-be0b-4df2-974a-8afa9ffa8729.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).