1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 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 0x74768694e738723573ca307ce3fbe29f0f760c0e47745b71d18a37a26b478bf1. 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/1f01ed0a-3fb8-465d-8abc-b8eb9c8ae95b.json and https://artists.proofprofile.net/proofs/artist/1f01ed0a-3fb8-465d-8abc-b8eb9c8ae95b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb322175586de252f05da6278545356fd189572d1e786a875888462fea7cac8e8. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67eaff9b2753a506c0a021a3298bcf73f640dab4f293c3f7920f06e8f0f1f48d. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291500007.
While I Have Breath: A Tribute for Bo Sanchez
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62e2179498c570b00494f1f354728493d5247971dbd818a7f94bb9a6128646d. Chain 2 (Bitcoin): anchored in block 957684 (2026-07-12T09:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d39cf40f50ae44c07956a9d2c336707f90f73c451442b2a3c7ac851248f7d3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291600017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad350d87ae6371b56a431c0be0f55557461ac8923c00fce4c2ead99fc21155b1. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:22:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291700021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1d4c3ed60536044be9539f1d4648e24d024d29f569894d12f604b4f2290a34. Chain 2 (Bitcoin): anchored in block 957692 (2026-07-12T10:37:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291700022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb70c4d097acdba8c44996f8b90aaf980041d7dec6969312b250c497a26911a3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1e41340792021d34a1810a3e17830a9cbbc25b9f0dcc820bccd42ccb19c118. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a90cf7e782e40dea60dcb76b8833f6b1789ae1fc4b6507adaa3705762e9b461. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbe88a1ff0291454e8a4cba96c91fd1f00a1c78f25f1733218b4d40f6f29212. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x486d0dee9cd7ecca39b4bf08ca55826c917dc1ed0161b0890947631200d2bc2b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/PHS291800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f5ecdb043c1d3179b674f70944ffae3d9843ff891bcd5c18694c5ed958eb4ff. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201927071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371a9033f1b9c33fe39cac2a7fb4cfb30d53fd84278aaa96f1197d0488860fd. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201934810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902596f0abf04a0f783345eef8057cacb6f34c398ac83acaf4d35d71dabc83cb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201934812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8641aa96a0285b504ec8799fac82f1848af373d41a0ab43cdcfe741dddf5d670. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:48:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201934814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf651c4aef998d0f1673816be90b68d98c4459527027121bd51c8bce5290207de. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201934815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b0b292166ec9239c35d9df21f23ae714a7a6e1754920eb8ee4571837f284f3. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX201927069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6c2843fe50b3e8f1379571996b389a3ea161ed864ce2cde3a2b255a0a83656. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR96X2014109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd05ee5364b94dee3439ce3419d2e61752533cbdb15973ec33eec720b5c7b5f7c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V2013461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afbbf0bdf369c5610fdd34f84b3368fa2e2c6f2e932bce5b39fa7b0ec2842bf. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:25:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR26V2031409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e68a4ed7e8466f05682fd8030b74e4523896c2033567b3f50bf783733cfbff. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872119923.
Better Is One Day (Live from Feast Conference 2021)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f915980cb49fac09e42cb0234ecf0505b491b2e35536cee0962ac39f016836. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062205974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d4fb6bb164fa3a1572f710d7c1320d384935c93d86a3e6b3e28282daea257ac. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:43:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062205976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c65a44b2f528a87da209751753361ac11dd21b30c2748066b6780bb0b60f766. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:03Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762360444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5028dad08e7eadf4b4ee87ad92a41c4370f3628afaf925e1736ef63fd0e859a8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762360445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e747000ab5224b61716ea2d954a90cfea1b29c2d67d5499a446d12706c2407. Chain 2 (Bitcoin): anchored in block 957681 (2026-07-12T09:09:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762360448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c132bc505e0714d505888117866f69ac09c14e995903e420d9e9bdfb1ca3674. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762360449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b54d2e629a4da7a5b76dfef946dc3e1855a7064d1e1eaf415bf7bcceee773ca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX762360450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccdc95947c901c4d2d2c42091955530873ec54918c518c535f2922f9e53945f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872493742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3d0d4ae0370e572e6797560b08272d06f37238ce0d412f2db787fee1d76322. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872493743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585079a89a3d6c17b639aca3f71b85d6c367fcdeda26e504cc1b5045c42c6ceb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA0H2492638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb26fa7107f1e84d3eddb135c0f5c3254af7693d0c642fe7954ff5178c7b2e. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062429678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbcc31bde7a1101c516557dbb81386325d18170c06be01d16a2d64d5fc15d4f. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:34:56Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2582071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ea1d5bc249fb6cd594627ae71768b5cbf2c331169d0b194419d1b876691a28. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2582072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd320f21a659b391005d64554b25e958dbf46864f748e45fb436fd78876b13c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2582073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c74d43638e85647214878b1c63e3bfe370a1277bec0ae62401b54dbd8e4948. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2582076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece68cf6d4d049db647c851d849abbfbcfec22c01c3d173a924c12f527a9d29e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:50:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR59R2582077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5476e196458fcae6fd6f9c32c9831ec4f6f6c1f071ff32220653349eb58b74b1. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX872525364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0433e47f6ad1e287850487ae5bc687e9705bee9a9ae4a35dfa05f1b17cb340c4. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DGA062536150.