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 0xc6abec65893186e9b120506c3e04dfdfa88c8aa389eaba5a10082298ce8705a3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5425a66-bff1-4e8e-b1bc-fe0883e84473.json and https://artists.proofprofile.net/proofs/artist/c5425a66-bff1-4e8e-b1bc-fe0883e84473.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0xd9520a0ff0f2967df8486aee032331b5ca141a8aa50a48d4fefa8dfbadceece4","isrc":"TCAHQ2343051","name":"Save Your Tears","registered_at":"2026-06-05T22:59:24Z","spotify_id":"3CeeJL6VpKPnnvoAbFO4m7","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 0xd9520a0ff0f2967df8486aee032331b5ca141a8aa50a48d4fefa8dfbadceece4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3CeeJL6VpKPnnvoAbFO4m7.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/3CeeJL6VpKPnnvoAbFO4m7.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc0e0091119c2541427bd2408bcecd6179f7639e97012c411cbda5e395444c0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0UmxoA9iJZlKmz1wP9riFD.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/0UmxoA9iJZlKmz1wP9riFD.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44327c5ba30ed47cfb10e91ec56163220a1c67a1cc017506283bdeaea99861f1. 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/5NE5H8aZo1GPMogWQ3SC2S.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/5NE5H8aZo1GPMogWQ3SC2S.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa763403247a65589b9a52fc09cc0f6c497548f5cef5bba0e89929f521018f08. 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/7aJLU8IgZuh87MIsB4Kn0c.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/7aJLU8IgZuh87MIsB4Kn0c.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a7b319491ac0d2e563c9e9a5fe7a02e7eb2a6bf635d4b55b5263f0b8b87b2d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7Mvgu9fckBZMgwsBXRkqne.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/7Mvgu9fckBZMgwsBXRkqne.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde95b51da8ba313eae2b1c0ee246ecf185062da99a4220c0e431257ea69bd538. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4jc3cU7YNnoiA4IBXaRdvj.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/4jc3cU7YNnoiA4IBXaRdvj.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b3846f011dc0c0893f9cbd14d22f54da3a479c7292ba82211e5354b39cc3c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5bXBLKAQ4MTAyKRdVbryrg.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/5bXBLKAQ4MTAyKRdVbryrg.
{"copyright_id":"0xcc136ed614e85808759da844e5e96a70940bda46cb3691bba0a957fd88e161f0","isrc":"DES232100630","name":"Get Down Saturday Night","registered_at":"2026-06-04T07:15:11Z","spotify_id":"6eXKCcEqAU4eJLfDgh8sfG","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc136ed614e85808759da844e5e96a70940bda46cb3691bba0a957fd88e161f0. 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/6eXKCcEqAU4eJLfDgh8sfG.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/6eXKCcEqAU4eJLfDgh8sfG.
{"copyright_id":"0x6d11dd61954bd6a556399775935b507cac392d5b4a7af94fdea2301f4308affe","isrc":"DES232100631","name":"Get Down Saturday Night - Extended","registered_at":"2026-06-05T04:35:45Z","spotify_id":"0yYm2Fvewg1Q0FIIl1o5mW","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d11dd61954bd6a556399775935b507cac392d5b4a7af94fdea2301f4308affe. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/0yYm2Fvewg1Q0FIIl1o5mW.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/0yYm2Fvewg1Q0FIIl1o5mW.