thumb|right|A carrion crow scavenging on a beach in Dorset, England A crow is a bird of the genus Corvus, or more broadly, a synonym for all of Corvus. The word "crow" is used as part of the common na
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9d3de2c28472b28cacc24fe77af4f3ebf43093b8ab2afdcfed17acbe6e9c86. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8b3be5d4-91d8-479d-b055-1ce6a6a589a6.json and https://artists.proofprofile.net/proofs/artist/8b3be5d4-91d8-479d-b055-1ce6a6a589a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sunburnt Throats and Happy Thunderclouds