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 0x551d3f1de03da0078c7e1bba55ccb2b27d4e7862710d8d3ae1562f64a04dc55c. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a90b33d-5ec6-4c01-b431-2fbae13706e4.json and https://artists.proofprofile.net/proofs/artist/4a90b33d-5ec6-4c01-b431-2fbae13706e4.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 0x99b82d12cb8ac93ce2f809b76e532c9372b5e0f9af40fecc338bc87ded44dca4. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:30:04Z), 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/GXHAF2579713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a4ef3d63dea3ba2d913bf5da6acdeb3bd5ec092edfdead5c26141baf87cfdb. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:38Z), 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/GXHAF2579732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e85b91fb3aceeee0fd36f345bb228afc1687c29354df9490411d6d57552852. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:41:58Z), 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/GXHAF2579716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbad3a930aa6cbc9887ca3275d10d330739bafc54a9c8c29bd228a18b976494a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/GXHAF2579733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158f5d0fdd5d9760ebefe476442d15e6ea2abf0fbec2c2116866d9cd6c9544a4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHAF2579739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e5bac4e3b9237f8e3de4322968252d3d57c8f02a063221b9b2dc29f219397d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GXHAF2579717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6552176f207486f69fbb64da5f3ee6e6acff651fa962198520342a89539423b4. 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/GXHAF2579737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147ca4da0f179b7fde233add2d5d7a9681f2fa221bb715d94d0a311a82244786. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:36:31Z), 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/GXHAF2579711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421beef05405537c284fe6b52555b43a7d6fbaa1f2abd2eb46694b6e0f85211. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T14:59:19Z), 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/GXHG92574781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3933a3325612ab9db6a945d82f906a85abd74a3a5ecd2a11af0d0b319cebdb8f. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:23:15Z), 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/GXHG92574780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a5117d55716114a22e9c6262387806b63ab76045d2a11e5cb1713cf948fd3b. 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/GXHND2524145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa278cef7a3cccd2073abd4f4a5c997acbf88a3d9a5ed0639f53341f3c01cc2a. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GXHND2522750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288880eeb0d335029d0b27c24959a5d7e41e0876310c6177904746a8ab320cb. 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/GXHND2573278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6665f0a006c51e7edd55fd3701f8ab4bd9c464ae480a96d23ffe85ff016af. 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/GXHND2573675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b79fd9bf8b887ee0c9c2c2c91e00c9804dec9531aade37870cfc6f5a00a361d. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/GXHND2573299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65f47dff0310109bf95050510a9dcee0075b9c1d1c616aa9b63e7a69655a881b. 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/GXHND2573825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2cbc0f69f2dcfe9d9e39888a3feafd70163f0b65b9f837de91a37385be38c39. 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/GXHND2573298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd215ea1c0320cdf1dfa8a33364ba14a94a3277367e9864575f645977f23f8d. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GXHND2573289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b215434f697382e14e22e4b24950af85afe33293cac526275444b71ee76a0bb. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GXHND2573826.