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 0x14043c37613013c8c1b373582530cb18224f54bc20d731a8fe205db92c13911f. 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/dab9cc31-6ff9-4cc2-b8db-fbe2c0d8112c.json and https://artists.proofprofile.net/proofs/artist/dab9cc31-6ff9-4cc2-b8db-fbe2c0d8112c.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 0x69c5ec06f715f8e9d242d41e2acef27bc8920ff386ec1e2adc3ece1c7fcc78b5. 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/GBKPL1811116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc464745401751053f1e781c30f9803f6a73fbb429d39b7c4f678eb9364723aee. 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/GBKPL1811117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f01b99ea4922f7728820c6173288d755c48f40eee0b69a0858930d306dd933. 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/GBKPL1811118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc49e699ea3ef8d7971b89864e6d04ce996d0de38846b9ed13ff58922a59028c. 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/GBKPL1811119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172010ac2a97d248c787c9e994152d319168d65bf910e48f283ffd1b19fedc19. 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/GBKPL1811120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9224aeee5fa2877b43ae7a18b6164e27926b414b1fa2744fcc29d352b1826ff0. 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/GBKPL1811121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0066862565333f0325fb582190133d2cc64271e104f9ad1c653df6826c788b54. 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/GBKPL1811122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45b5b77b29aeb1786e17694adb73b6316059f7b0e30debd70024ec598511789. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKPL1809690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b7732942269f28e527ba3c5a9f2c0f668b554e262d5dabe10c558c01d9daea. 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/GBLFP1839157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde6a48c56cac174625f5e4ae7b8ac95a031b3cf74a80aa9204c146123f1a258. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBLFP1843611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb95abe396c9cd3f0f33fecc4637f07440215104eb73afdf6f965f482502930d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBLFP1827413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19fe4581941d3c7f059bd224f86c68ea2dd15d5f7544494cadce8560785000f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBLFP1817681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046db7c2c5192d075511f69d044f46f179b53a4546bd7c5a853bcfff84662032. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBARL1700201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd49eff5ab66e2d22ef0188139c586b287b34d342000b35605cb49e452f3f1c6e. 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/GBARL1600673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f58d3b63a5eb485bc53c96a0e2c18a366a9c8841916cd5cc1e7cdfb32d3c47. 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/GBARL1600924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3c16d1f38665c64c92ce5336023db93e4b1a188b4827bf686ea0b766ea6708. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBARL1600890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe673e8093697dac166d0488b5c892b1f152f025818ed16ae6a06859e1747f7a4. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:36:54Z), 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/GBARL1600670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc986fafd5092bfb620815262786c1f51f24c7714fb26b8c99fe39d67db86a0f2. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBARL1600672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe07978a1cd216e184b5d4bbf906c97e06514d436ed86e87fd62586a421fea4c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2002489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af3e92c80dc797c90200a05081cf34e8e3a6beb134bf62370b37e02011fc049. 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/QM24S1846710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cdf7e464aa1a1450e07bdb9874de97aba0d58b7fa76b3dcb8fdfefda30ceb1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S1809873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83db02ebee3ceb09ddebebd90942a70efc3d66a1c902a75118b8f455f928b8a5. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QM24S1834449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9a08e43cb1f0168bfb71dfc4cf8637ef6d3b8aa2c8027baa95a6f0aa02cd57. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QM24S2011819.