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 0x0a4254a70d5a12093b2e38285f4be77ae660a1838467cd47fab555ab9496ab40. 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/1a664062-e94d-4860-9e0e-6e175d99f0d4.json and https://artists.proofprofile.net/proofs/artist/1a664062-e94d-4860-9e0e-6e175d99f0d4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x0c886ba887b15aeb005f244d56ffb8ba2669b906e5463f94d6406865cd1d8743","isrc":"QM24S2002622","name":"Waiting For The Moment","registered_at":"2026-06-22T22:44:35Z","spotify_id":"6scXyrqrzoAKwNXNE6gg0c","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 0x0c886ba887b15aeb005f244d56ffb8ba2669b906e5463f94d6406865cd1d8743. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6scXyrqrzoAKwNXNE6gg0c.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/6scXyrqrzoAKwNXNE6gg0c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c886ba887b15aeb005f244d56ffb8ba2669b906e5463f94d6406865cd1d8743. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3T7k1fN1jIqUn24BMfIPJ7.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/3T7k1fN1jIqUn24BMfIPJ7.
{"copyright_id":"0x175745b820b6a7f4c43174d337f8cc768b3da3ab7f4357bb658d632dd62a6ce6","isrc":"US3DF2424934","name":"Bridges (Josh Jacobson Piano Version)","registered_at":"2026-06-25T09:35:09Z","spotify_id":"2poG2e06rqznGlxLgHiDWo","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175745b820b6a7f4c43174d337f8cc768b3da3ab7f4357bb658d632dd62a6ce6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2poG2e06rqznGlxLgHiDWo.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/2poG2e06rqznGlxLgHiDWo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3247442b24ea8bab55d4a7b1b1c335682ba70f1d12834f9a6d0d2a582c021a1f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3nFAJrzDHd0UFbAbzvRMdM.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/3nFAJrzDHd0UFbAbzvRMdM.
{"copyright_id":"0x175745b820b6a7f4c43174d337f8cc768b3da3ab7f4357bb658d632dd62a6ce6","isrc":"US3DF2424934","name":"Bridges (Piano Version)","registered_at":"2026-06-25T09:35:09Z","spotify_id":"3ZtTEecZui6ak9qB5eh7Tc","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175745b820b6a7f4c43174d337f8cc768b3da3ab7f4357bb658d632dd62a6ce6. 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/3ZtTEecZui6ak9qB5eh7Tc.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/3ZtTEecZui6ak9qB5eh7Tc.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd3060146002b33857259276cd9e9c9c42017934f2bf8ec99b9b161570ef7a7. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0z0k85vHAYQJN1DnPf0kgk.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/0z0k85vHAYQJN1DnPf0kgk.