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 0x41ab5d673a4b30f79970160511de0d4cbd881765cc6457d467c152d7e1ce957d. 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/d36820ed-3e65-42b8-aca8-4568d0370789.json and https://artists.proofprofile.net/proofs/artist/d36820ed-3e65-42b8-aca8-4568d0370789.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 0x5b8dc7b27c5f96661df7062bae9e152ad020a2295e5cc025bb8aaea6d387f350. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QT3F22472853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00fc50996b1c3f947c03d655678ba2ed632da4cc0e49dd9565018fc6b1100ccb. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QT3F22472856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x272960e78e7591ba7f1e4465cb3b3d19b4d419b3ae1f86d0e1359f6a013c2bc1. 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/QT3F22472861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59feaf57093bef6f89fcf0814140f69cc11412d3426f33abfef0eaf42b737529. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QT3F22472862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fe9e49afceb6b465fa8413d2ab628cba0255cd6c3d7e84b0b390d60b686cc7. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QT3F22472863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513b36f4b4078a0416e4410d2da5cc8fcaa8e6e2074309bd4d0a80a3fb04a83a. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QT3F22472864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3c6b81befd4c36347588f66b7266e77868e1c362aa045cf08920bd9b243786. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QT3F42432277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f345e0c20942a99f5c2b60cf75dacac139a366419ea0bdf11f67ad9633846c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT3F42432282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c49cea4f0e349cb558dc6ee8f7366a0c4b901da69fbac45e2500b39b666802. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:47:00Z), 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/QT3F42432284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c0a8d9fa05e8d2c5460085cc127cc44c46b35ec174e11b4aaec111a26ba5ed. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/QZFYZ2575631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2261e89a333fc32ca21dfa263795ff96f11a532069589da8f455f85e10bd5f9f. 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/QZFYZ2575632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3793f6ab2745bedfe3401d2480cd14c99359160d632d3e439d7d44bcfd620578. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZFYZ2575633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5759ff2fc312e6cffc670cbf38001cf8c0c4016f85853a8574c71c6ade6a7918. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZDA42556621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae72ecb10d642ff83f9969af634b401dadd47b5b5ce73f6f6ad5e6c794fa1c01. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZDA42556628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708fe6c61a1b62e324079cdde44be79282ce9080a5f1b4ab9824e5e914aaf07c. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6L2573578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73413f89eee11a73930afedc3e8266d287ff9e6597f50e28d84427386d631ea5. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZK6L2573580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8276630e7ab6e9154a69b13067ae074f831ef20b3ca6365bd3039e2b1fe136cd. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZK6L2573583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229d15be3b917900a34ac5648e1b0bda58887b6adebb059ec63dba5d965107d4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZK6L2573584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b57a55b372d5ca21e77a955312f0e8d3a07106e8f15a8f26c3c2fd49455e96. 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/QZK6H2578285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f6a64eb05ed3e9ddd991774cff2bb39bd7fa6263271472e999b60d74ea863c. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZTB52563566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152184364b3645a0d14d69944b9b0e9f085f9b7ef3ce9588072ca0c557356e90. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:37:19Z), 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/QZTB52563568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db3ff08a4bac55c0bacb73f5ddd5d529c112ef5d7ba6bdc07e391aac7c2ee5c. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:00:10Z), 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/QZTB52563570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2770f7643dea22c3dcf241a6a8e3aedd09c9aea69929d27bac9f1aa719b187e9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:38:16Z), 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/QZWFL2571202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e057b60f3da96ae25b65b52b8791e65baf501089da2636b63b2ce18b3a0e4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFL2571204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa890ce8fca633bbe21bbe4039f1358c864cd300b70fd4ce37b63af9762c613d4. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFL2571205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe907c2fdf2e90951c668efba87ffa5297f541c1e25b3613208592f15a25b22da. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZWFL2571206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1458c72afeb96550376b932fff29252bd14f022e59925fc1a10a93ecfcedb4e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWFL2571207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfbca1366e1301c47c6abdf980a20332a266774edd6d980a3d6f99dbe94eb53. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZWFL2571208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9766a4915bbffe5143d978a500e8f91cac2df3fe2cef30401a13a196fbc0fed2. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFQ2597490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f387d4c64ca0072f8b1ca734aeb030b9fc3e0987a6a678e1c93e6f107ff2d4d. 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/QZWFU2507013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56de91bb2bb323345bccd32a272e84bc4ef751913ee89fa73499f68362d757cf. 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/QZZ7U2550277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d7eaa8d044b90a577b2a3948557e422cc95ebe47706db812bdefe079a86c90. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7U2550278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38adebce64b1d33a4159c53b0b5e4a487eace80203f5a0582053698b7aa1d8e1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7U2550279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394836b08424339f9df1f7cdefb62f5d577d7062c252e2b9888a1fa4df25f440. Chain 2 (Bitcoin): anchored in block 958861 (2026-07-20T10:02:52Z), 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/QZZ7U2550280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d79750b229f46b1e9a8e4ac648f87ec458a17fb6704d424f1f55373e765cd68. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZZ7U2550281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4a793e114bf552f6bd85b62d986d558c2dac173e13bcb131d38f974c8b301d. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:43:00Z), 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/QZZ7U2550282.