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 0x6fc2761932464e30beec55e9b13efc69a08c6391fdc53ba73e732472d7e41e54. 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/0faff47e-7747-49f9-b5ef-c57cf719f80a.json and https://artists.proofprofile.net/proofs/artist/0faff47e-7747-49f9-b5ef-c57cf719f80a.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 0x2e088e1698e139a9911381bdcdc207dd37d2766d43f0be28c2e6fa4b4f5ddf1c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72400417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70cb21a9504ced9fbab89a772a554211f5eb48561a3ef89f04dd7aeef2597e0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLI364317800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61cd5106840897bd9d3b3c6313783c0d86565b81a78e6f8ded4497d44697a792. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72400252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9451df270664d6895515c944ff2c87760f82ecaae0e713293d1640515ab92d55. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLUM72300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2c095247801f6ae231d67ad7e19938ac4681cb89aecca9f4d39a128901cedf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72300660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc437d29d87d53bca25ad24244091a522866fbbf9a8dcd589a6635f2907bec407. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72300561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba174f34ff53417c859af6654e9205784de68ebbfd133f73323ba83bc6913231. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLF242210958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7723046a3f40fa001bf5b9e5da92e2c9fe0213466e178694d730d0d8e12048a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72300415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817540afc5b1aca6e991d424547de5da237bf003b3d3479212f12c72c772aa32. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72300390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36013ae606b2bb936ed549a0f3ab718c3bfdb3f23ef6e71eb62f85c1cf3624ce. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLC062378776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e63ce1756eca84bd252b8051666a7de4d64d10a1b001ebb72b8293d94a164a1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLI369602340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f3d6e99f281e2193a8d70b2d35ce4446e14a922c4ccdc19814910f8c487ac1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x544c9187fa67860ee4ab3c98021f70b898d05310bb6d4679d7f5572bafc1b569. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/PLUM72300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9904fd2516d5c4b208c8b13e33445dd0a84463bcdd466ee149866f79f7ae9814. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/PLUM72200531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e23f37e21c37af88dee1a525b44d01ab9a77255efa180853de78664d97205c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cebcb6a2830ee61b0b3004a15210b64edc7b224f611b54e8030fe7648917ff. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLUM72200333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadf94cba5b94fe748b559088339c32656d59d39e338f417b4a0a28f1e4195b8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72200201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de6e2c9388ecbe3022237aa0064c8b50f353ac22f2f2d87c85fa751f7ea500e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/PLUM72100911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ad484e2f8752e7830ee92fa88db8fa6e13b89d77c223b409aa4a6618bbeaf1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72100865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc245be4994480015395b8e54fa8c298b0947c270697401237631e6c01e2cafab. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLUM72100818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x389aaa254302dc48ece3656cb6fb379bbb55f458a3c45f7671f8dfa82615171a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/PLUM72100786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868fc62eed61e8899aeef1f60bea71ac9572f951ece592fbc907a5d723723ce9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PLUM72100730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5833719c0a487ad0dfc2c0e723e5e69e3f03d44f96db677312501e9934f5e7ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHN32152652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a05d06dd4ed1dec58d24c24cf590f22418fb9fb2162e05f632b53564c50c4b0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PLC062222994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7993d045791c09579a2d310aa18f6a96991515148ed005a3b6cfddf2b77217f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ42189294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3235219a963f62c2c8b6594270e3fbef5349d5114b837ac23343c12f1526bd3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ32135808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93f23c951e25f78b0e3a98d325fb0430596b027b62ee814d566bf47444fc4a85. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ32104420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a7663a8af511686984b889b3e00a90e9e616233da54e68e3099e4b0c0288ae. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ESA011642161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae39dbd106c44a0e227678e1743a44c3b56b5f02314926d4179ead5fb7391e9b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZDA42188024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce239657ed0d3eecd2f2c03d0dffc4367451916bc14482142eddb70090e1f61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ62157603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96815392ee397dea26723152adfff4cfecca8b29b7cf429fca58381e70b7743a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMHM2039180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d4c903207c86f1ef0bdae943bd79b6245f9b7ac54ca7d7a0a030a8cb390f58. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZFZ32172695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff748137749e5b6c70757d514a101ab7e11b6a21fe42a546bd3f917ae74c205e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGWW2142414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3573caf55a595936002e4719c2f1398ea34c8f2160cd1d10b1322dda5c5c70a1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZGWW2142418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ffd4a7d805da08f8feba28138e67a850db9514276fd4a55faab1140db84653. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZGWW2086736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40134ce9a7f1193b4bf692b46bf4a4a0b7d2be91f995749c7faaa986effc31b2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZGWW2080267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01d1d11cd6e5cf8a6b08b88c04d4b3e4741dc85775286f23c3e8e09fa5383dc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZGWW2007892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e9c54a40bf9fe81e6dccae8984eaa45ee682db398d3b9e56c095321066b6c2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES72149017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86613769f5c9b89510faa2b3e8361b123516a292901e36e78ed463ab97fe8141. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZNWR2088846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2d992781915b3f7361127040000d75c654802d871a0ac57df538ad77af628f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PLUM72500073.