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 0x54a5b14234bd44d463ac7442aff31586499f2bcc155b0dadcb8f4f7a5b56b05c. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45477b5d-055b-4428-8055-d2954dc9dce5.json and https://artists.proofprofile.net/proofs/artist/45477b5d-055b-4428-8055-d2954dc9dce5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Parrakkaat miehet (feat. Mansesteri & Jenni)
Siimat solmussa (feat. Poju & Mansesteri)