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 0x93e989f4de52e5302daeae88a809dfa25bf1c77c3c85104bed6054570035d4b2. 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/23ccf52a-0452-411f-9e1b-44af37924a20.json and https://artists.proofprofile.net/proofs/artist/23ccf52a-0452-411f-9e1b-44af37924a20.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x212cf31f5ebd1440322dd3e1e06b5aae527f2b70984045ed52d632cd78067d63. 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/14tbb5Tm5sAjcsm02czhvw.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/14tbb5Tm5sAjcsm02czhvw.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56baa0572222e356b18c5929945960b263034d98b8cec0d382e25346f47b0da1. 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/5WZogsNGbF8m0FU68f9pV4.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/5WZogsNGbF8m0FU68f9pV4.
{"copyright_id":"0x799d1d09a014a29e28c43aee360c1968edb4a567ed32e6b8117b8fedffeed367","isrc":"CA5KR2306012","name":"Next To You","registered_at":"2026-06-18T04:06:33Z","spotify_id":"7CRIYXFTkweDyZaQnARCMy","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799d1d09a014a29e28c43aee360c1968edb4a567ed32e6b8117b8fedffeed367. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/7CRIYXFTkweDyZaQnARCMy.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/7CRIYXFTkweDyZaQnARCMy.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e08f59eb813a7703de01c67c5bf7bd7b0645398a876cba03bb6a5f0e39090. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/60scgT5mjY5b3UlNJFwGW0.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/60scgT5mjY5b3UlNJFwGW0.
{"copyright_id":"0xb1f82385bcf1ec51df5f5e64b4d6e809b26115a213da6ed820f35760951a926e","isrc":"GBKPL2278087","name":"Save My Life - Acoustic","registered_at":"2026-06-09T19:01:08Z","spotify_id":"5H6ARB3LQradH9aiVeC1xL","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f82385bcf1ec51df5f5e64b4d6e809b26115a213da6ed820f35760951a926e. 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/5H6ARB3LQradH9aiVeC1xL.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/5H6ARB3LQradH9aiVeC1xL.
{"copyright_id":"0x361b5cec12c4f6d87a559911ad3ffe75c2268085d93b1a67a94ed5096b734e28","isrc":"QM42K1977351","name":"Back To You (feat. Josh Rubin)","registered_at":"2026-06-22T06:54:24Z","spotify_id":"6KMn0o7RCqFtLnbB1YKrmM","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361b5cec12c4f6d87a559911ad3ffe75c2268085d93b1a67a94ed5096b734e28. 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/6KMn0o7RCqFtLnbB1YKrmM.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/6KMn0o7RCqFtLnbB1YKrmM.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f2596dbecee99a509ef7ea1f52cbb3ccc98924840988f83c7b76871a44032c. 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/2hizkrBBcTttmp7afrb1qi.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/2hizkrBBcTttmp7afrb1qi.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a2051d61e5bc16bbe749dfaaebd08500c4c471f33fb12608f390acd4d88e9b. 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/6xQpnKc8pxK1cfM6DAgySh.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/6xQpnKc8pxK1cfM6DAgySh.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6757ad2a8d9906376b4221477a257ec61308fa8824642453bcb51a47fef7cec0. 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/08mrbUyxFm78JAI3gkxDH8.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/08mrbUyxFm78JAI3gkxDH8.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dae03d900700e951a84aedfa8ee5643eca6886bf0928172cdc6752dd95001f. 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/6WexYlepS07aFm9BuZ7h7o.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/6WexYlepS07aFm9BuZ7h7o.
{"copyright_id":"0x799d1d09a014a29e28c43aee360c1968edb4a567ed32e6b8117b8fedffeed367","isrc":"CA5KR2306012","name":"Next To You","registered_at":"2026-06-18T04:06:33Z","spotify_id":"6B99tNcmtkvqRLBoMydn6T","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799d1d09a014a29e28c43aee360c1968edb4a567ed32e6b8117b8fedffeed367. 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/6B99tNcmtkvqRLBoMydn6T.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/6B99tNcmtkvqRLBoMydn6T.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2e08f59eb813a7703de01c67c5bf7bd7b0645398a876cba03bb6a5f0e39090. 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/0moeK5tOpJoI8AjAL8cl6b.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/0moeK5tOpJoI8AjAL8cl6b.