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 0xedceb72734ef621d2e2cdb96d01a8761ce3927e4072a71ac1a0465bc708053c7. 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/e437f9de-3e03-421a-a5a5-e211c721d37b.json and https://artists.proofprofile.net/proofs/artist/e437f9de-3e03-421a-a5a5-e211c721d37b.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 0x92462975aa3b12afaf9ef405674bb404e544c33fbc52b599cf2f35a15b3a5818. 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/QZFZ31943114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046f95e9270309a2381e7670d87ac9358ef37013799d53161c185f046d37d047. 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/QZFZ31943121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7699c21880dd5261e37c849193da5540abd9cc86d06e9994bc06af00e05cdb. 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/DGA0T2406604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f7cd4126110e2c2efab82dbaf981120295f6bcc8d7035ec05707e24910b8f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0S2488143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0c24b7bab3e26cc7a16f0123b677bb9b3a4288121ea25f316d891ff2120744. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0T2406605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34871e501039e72f0ffa4444a4ba5119f61585b0be5e776e4cf9cad9c708facc. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0T2406606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54415239478f5dd4a1d889c69d32578ce8cec7678ca398933d97f88476ef2c48. 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/DGA0T2406608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f60a916dc9e4918cb9ada95724aef301c942671fab137622612c9825c51728. 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/DGA0T2406609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7a5af9711fbadffbecfa46a7319374baabc97c3efef4733273995b14356b02. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0T2406610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73e5fa4d3e896e3e5106db196539b705772b204de0c07613d9c5f43122b1240. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DGA0T2406616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75feb9a1295769f10449926360ce9a4970fd854e3af7ef4b88595bba31ed766. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DGA0T2406617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceba060d04a7d68a721307cb1d8bca550c7a6f3ca7524dd35044c4fe3847501. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DGA0S2488148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d21571654a167051a6b1486631b74a703fedfa4ddcd296e8e4340aa30dbde. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DGA0Q2438932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea84273d989b8990f2630d05d947eb4ed550aead386d9cff311bada2a63444af. 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/DGA0T2406619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa92fd84a36214059c253e69cf8cf64907e530d3740deb3eb571c4362cb01265. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEZC62419862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c92c97054f54f07310c3a25012c73ad6137fec5f7379d9a6a1519a02a1f5a4c. 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/DEZC62419864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6787daf1c2e6db84849c106d0591a306b441d34a2ef506b2dac6d1f1a8c8caf5. 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/DGA072342637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b07fb6c218f9418d4e4abf8e90bfbc06e327cabc16630aab42be1c407cd48. 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/FRX872275312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae623b2150776b6386d263dfd6cb367fa32491f005858fbc6319b3cb85e720e. 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/FRX762108961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911dcda9260ed38cf64467ca46782a7ee8594a8f10f6c8a0e66d04cbe0abdc01. 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/FRX762108966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90171c87408cb6b47ca6f67d236eed549996e657b95b461cd33d51e17e13559a. 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/QZES82146887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5948a670100755dc848bc58afc4ae0177e89894ae9f73e2e7c17d8e01734e231. 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/QZES82146889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21eda191adaefaa678fd5fe69e67fcf24ddf090a19ceefd1c0809677f21aa29. 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/QZES82146892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9746a63270a7deb38ca83febe5899507795abb9156d9ad07208578e3b6b24e42. 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/QZHNA2019025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b873ace921e70c3bdf065655cbd800e1a725d083d588b8937438d3f54ef2c8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZHNA2017781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912d8cc72e22bbca6186e9855f6972402b5675ad12c26b47b60d938ca4d8a0ae. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZES71965590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd359e9629bdf6f398da38504c6515addef7de4cf7328dd7a15324e30cfca83d. 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/QZDA81810964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a53fa285963ee9827bd9bb213701808a316a8efe6b5c5dee93079c26c877a77. 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/QZAPG1781475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59efb349283eee7f4710f7ce55d809d3a19794a90b8ee7c918814a4a98fa0906. 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/QZAPG1781480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a1123efe2762ea11a89a894376ded284738a4e38c647059f0236e03646da64. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZAPG1781490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2a7037ac3f818e98cd399053c574c5cc0ff4cf250fe619bc8e7c6db17d2e1a. 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/QZANL1734260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3718200f7eac512472bcaa540d968109404a69930b414e77fa3690f66d6f4ad5. 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/QZANL1734262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d7f91e5359c184a3018610f5a81fba03c569794d72ab993733f4b54f486567. 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/QZANL1734265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaaace5e6e7907e6c7f5ad03eb45a9524c4c6dec163bdb06044f408e39dee80. 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/QZ9Y21705886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360ef56bede3cf7e4ea2dbc4563596fc8a8417828f8af2ce8d38369603055e3f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZ9Y21705887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00a5f95fd87d03960c77024286f2c0273a4e293e12fa9a424945b8f01b5e8d97. 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/QZ9Y21705892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcceba060d04a7d68a721307cb1d8bca550c7a6f3ca7524dd35044c4fe3847501. 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/DGA0S2488148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44d21571654a167051a6b1486631b74a703fedfa4ddcd296e8e4340aa30dbde. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0Q2438932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a3a44e959f4b3bc19ec379cb39e5b62632dca5b2c99c79d5f93a5a681df0e5. 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/TCAEM1966135.