1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4ea93832f780b03931d05096db635c1fc04aab0bba6c51c0c9701b1cc5563b32. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60a0c4dc-f472-489b-b820-4dac41472ec3.json and https://artists.proofprofile.net/proofs/artist/60a0c4dc-f472-489b-b820-4dac41472ec3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kontor Sports - Nonstop Powermix, 2021.04
{"copyright_id":"0xa9763fa8a26886167223cc1ac8f350fc5e5f1ffb9cba0ea701a3383b177b6fcf","isrc":"USUG11501115","name":"Hear The Bells - Electric Mantis Remix","registered_at":"2026-06-08T18:50:21Z","spotify_id":"1PYuLTOBao0mPcaqyn2e1I","type":"track"}
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. GET OTSBitcoinBlockVerifyURL → block OTSBitcoinBlock must exist at that height 3. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 4. GET OTSVerificationAPI → pre-computed 6-check result from server 5. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9763fa8a26886167223cc1ac8f350fc5e5f1ffb9cba0ea701a3383b177b6fcf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/1PYuLTOBao0mPcaqyn2e1I.json contains the same CopyrightID — hash it and compare to OTSHash, then confirm the Bitcoin block independently via OTSBitcoinBlockVerifyURL or https://artists.proofprofile.net/api/v1/bot/ots/verify/track/1PYuLTOBao0mPcaqyn2e1I.