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 0x458f8e629733674e76610fc6b815b99259db87c7553c9e112b3c3ed83c66c351. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4f7e8e7-0ba1-4d63-a581-ec46319ad968.json and https://artists.proofprofile.net/proofs/artist/d4f7e8e7-0ba1-4d63-a581-ec46319ad968.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
{"copyright_id":"0x1ee97176a37c6281a93e30b37dcd45307ec6dae98c47c76a9383a93cae299355","isrc":"ITUM72100985","name":"POVERO CUORE (feat. Brunori Sas)","registered_at":"2026-06-06T09:36:24Z","spotify_id":"6KJxdi9h6Y7TCSokZfvom6","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 0x1ee97176a37c6281a93e30b37dcd45307ec6dae98c47c76a9383a93cae299355. 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/6KJxdi9h6Y7TCSokZfvom6.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/6KJxdi9h6Y7TCSokZfvom6.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f8c7be437c37edca9f4160dda912542f072ad3828a4e23c5e9caf881635c5f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/2FpFRHt2uQR4uKx3qaH7Wj.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/2FpFRHt2uQR4uKx3qaH7Wj.
Vermi (con Frankie hi-nrg mc e Willie Peyote)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f8c7be437c37edca9f4160dda912542f072ad3828a4e23c5e9caf881635c5f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/02N7n6ismwx478DaqXCYYC.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/02N7n6ismwx478DaqXCYYC.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba82d3a7033fa0cd88672928f9b7b802fd59fece3700569464e5dfb3bc7114aa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5xwjAfN9jAq0cNJ5oEyw8I.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/5xwjAfN9jAq0cNJ5oEyw8I.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643828a93030cf01c7a1238f31964d5d876c903189d40d37990b11981918334f. 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/3tfxha6wwccc9Xy4vr7iuu.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/3tfxha6wwccc9Xy4vr7iuu.
{"copyright_id":"0x84307d1cecd627c2aee3e792c39dc5c8f8dc55be3c3787dcda1297d5464c7161","isrc":"ITUM72301200","name":"Vermi (con Frankie hi-nrg mc e Willie Peyote)","registered_at":"2026-06-10T16:02:26Z","spotify_id":"4UVYdofO4Qy3SHSTbOSggH","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84307d1cecd627c2aee3e792c39dc5c8f8dc55be3c3787dcda1297d5464c7161. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/4UVYdofO4Qy3SHSTbOSggH.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/4UVYdofO4Qy3SHSTbOSggH.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba82d3a7033fa0cd88672928f9b7b802fd59fece3700569464e5dfb3bc7114aa. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/5BUlZbM60m5g9c2kmbifjK.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/5BUlZbM60m5g9c2kmbifjK.
{"copyright_id":"0xca3c171f762822c75d5dff53a73373697c73f65c3ebff1dec8769c246ec0b830","isrc":"ITT742300111","name":"Per farti ridere di me (feat. MOBRICI)","registered_at":"2026-06-08T02:10:35Z","spotify_id":"1uLlFgQmur6CU7nYeXux0m","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca3c171f762822c75d5dff53a73373697c73f65c3ebff1dec8769c246ec0b830. 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/1uLlFgQmur6CU7nYeXux0m.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/1uLlFgQmur6CU7nYeXux0m.