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 0x7cd4b23995119cffe0621c1314eee5d6aa5de6551ae7154fb32bebe6457887c7. 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/83d8505f-ad27-412a-904b-3a2455f09588.json and https://artists.proofprofile.net/proofs/artist/83d8505f-ad27-412a-904b-3a2455f09588.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x27c494af044fe5f614480631a708b4f0a8ecb9e282f7c27642dee504f5d6b1bc","isrc":"QZNMU2449880","name":"TRAP CANDLE","registered_at":"2026-06-28T19:45:13Z","spotify_id":"0aDZ6YMQlkITMT0qiyHuTF","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 0x27c494af044fe5f614480631a708b4f0a8ecb9e282f7c27642dee504f5d6b1bc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0aDZ6YMQlkITMT0qiyHuTF.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/0aDZ6YMQlkITMT0qiyHuTF.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc340b4859f3193603a96794c54efef36b564fa9c756b79cbbc576f2c2c0c00. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/40Unk5nNP1yxVsUfcuVlV7.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/40Unk5nNP1yxVsUfcuVlV7.