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 0x608323385f61c17cc5b6837ac7bae0fac820b94b695c37feac527adf7ce9443d. 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/e43ba76f-e336-4768-ab3c-9bcbde257e79.json and https://artists.proofprofile.net/proofs/artist/e43ba76f-e336-4768-ab3c-9bcbde257e79.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 0x131d29ddf00d26d74872554eb30c5bd8394fba9b4a268a1f783840c4a7d82247. 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/1tyv9IxwkQ96QnmI6AkoXD.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/1tyv9IxwkQ96QnmI6AkoXD.
{"copyright_id":"0xaafbfcedb0805898a39fa150d4c8ceb67decbf1f48b5969c1e90ebb27a6c5003","isrc":"FRIDO2111785","name":"You Ready","registered_at":"2026-06-09T07:26:00Z","spotify_id":"2za5XDKEFe8kTOi0w2kPIf","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafbfcedb0805898a39fa150d4c8ceb67decbf1f48b5969c1e90ebb27a6c5003. 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/2za5XDKEFe8kTOi0w2kPIf.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/2za5XDKEFe8kTOi0w2kPIf.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x680ee742d98b74867bdd4e23c5abd2b0965a3d11690794506add4d472d0dfcac. 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/1x3N5iLt63TTke9YILHkWP.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/1x3N5iLt63TTke9YILHkWP.
{"copyright_id":"0x5fa05f59f0f967047f89ec0b5b5acef4773ae0b56c6d9add244aa83b83f49537","isrc":"FRIDO2111780","name":"Mars Blues","registered_at":"2026-06-08T11:44:40Z","spotify_id":"3Vw6jxsmxkwMgYwNSyGO0v","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa05f59f0f967047f89ec0b5b5acef4773ae0b56c6d9add244aa83b83f49537. 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/3Vw6jxsmxkwMgYwNSyGO0v.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/3Vw6jxsmxkwMgYwNSyGO0v.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ba0fab6064404adc99ebfab9479c7967232f03214a4a86e3d0385bd38b5a60. 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/5AWUYd6Hy1zS1wyUSOyDN1.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/5AWUYd6Hy1zS1wyUSOyDN1.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6203617f569149c5539e496708c8541188448a54274dd1d80e03dcfac5589be7. 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/58Hjh0cpp5V5cFTcQ15Wcr.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/58Hjh0cpp5V5cFTcQ15Wcr.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5238053f42d56e888ba2c9980331101f0d23e76f174c5291360be137d3649ba4. 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/1fFmd1dNthme62J8Kvmkhb.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/1fFmd1dNthme62J8Kvmkhb.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb66efcd46a98bca4f97b68da8b4705e2c866934f354b49d493515a7b9f357. 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/7EkcI6nlz0ct7RTYzEsVo6.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/7EkcI6nlz0ct7RTYzEsVo6.
{"copyright_id":"0x9632c0f64eb6a76cd234437a7f6f9e99c9cc7d7deea79c0a08f375622f347ef1","isrc":"FRIDO2111789","name":"Spirit C - Interlude","registered_at":"2026-06-26T23:07:16Z","spotify_id":"3OpDRMwEaxG0fxiHWokkNz","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9632c0f64eb6a76cd234437a7f6f9e99c9cc7d7deea79c0a08f375622f347ef1. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3OpDRMwEaxG0fxiHWokkNz.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/3OpDRMwEaxG0fxiHWokkNz.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5805ace2c7ad83b7983973216951546384609f88f15f999360bd7a698e3fa8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/3kQyMOmUetQoYrnNFy2nuE.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/3kQyMOmUetQoYrnNFy2nuE.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799a9e1362ab68aa261bbfbb3525e3ec89ac21d1641dafb51d13dc1f06cc1d08. 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/2D1ZG3CPXzHG6RVHyjeqtq.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/2D1ZG3CPXzHG6RVHyjeqtq.
{"copyright_id":"0xacfeeec7c2e4987ed87749602f781caa80649397b3e8def1f1ba8000a5ff83f5","isrc":"FRIDO2111792","name":"You Ready - Reprise","registered_at":"2026-06-10T16:52:07Z","spotify_id":"2Mxzp883gtztbTkvldt8nu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfeeec7c2e4987ed87749602f781caa80649397b3e8def1f1ba8000a5ff83f5. 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/2Mxzp883gtztbTkvldt8nu.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/2Mxzp883gtztbTkvldt8nu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce66518d932061d791615cce5c6b03755016bfaf303a8a2125c3c68b64951fc. 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/4TCuAOOkAlGfIQeKn7pVXc.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/4TCuAOOkAlGfIQeKn7pVXc.
{"copyright_id":"0xf77629df457cf10d34df355b74cc1f78707ce64cb28ccc420663827e5c47bbac","isrc":"FRIDO2111794","name":"After Hours - Outro","registered_at":"2026-06-26T23:11:12Z","spotify_id":"6BOaLdc674gpXuKXOIsaCu","type":"track"}
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77629df457cf10d34df355b74cc1f78707ce64cb28ccc420663827e5c47bbac. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), registered by our registry partner. Bridge: the canonical record at https://artists.proofprofile.net/proofs/track/6BOaLdc674gpXuKXOIsaCu.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/6BOaLdc674gpXuKXOIsaCu.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29cb66efcd46a98bca4f97b68da8b4705e2c866934f354b49d493515a7b9f357. 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/21qFaiN2O06j08MVK13xnG.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/21qFaiN2O06j08MVK13xnG.