thumb|American band Jackson 5: Tito, Marlon, Michael, Jackie and Jermaine Jackson A brother (: brothers or brethren) is a man or boy who shares one or more parents with another; a male sibling. The f
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 0xb0217ffb91f0d96f578699e692b7b91b16134e3ceae602c45f27a6169a420e1e. Chain 2 (Bitcoin): anchored in block 953610 (2026-06-14T07:58:09Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/12e797b5-2664-42cf-9590-93f66fccf9f9.json and https://artists.proofprofile.net/proofs/artist/12e797b5-2664-42cf-9590-93f66fccf9f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).