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 0xfe4c3c73aa04e5c724d202d7ea868da187e477955c3f063d87b48ba82406b463. 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/8895f8e1-fbff-49c2-82fb-a84dd1403651.json and https://artists.proofprofile.net/proofs/artist/8895f8e1-fbff-49c2-82fb-a84dd1403651.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 0x9bebbdf50a72989ca727ef691aa082a6b6cd257f3c677e5457327f68db397fc1. 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/QZPJ32173362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f8000c5439ee4bff8b60b238e205ec2593a6ba02a9b7884171957f76613f39. 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/QZPJ32143117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecba1df4aa64610c4bade3dc9a1a2d16989e2593fbe4bb0a0ed7a925e9aacf69. 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/USE831519878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3740c9d8cb49f865b62e2d9dadc506317a6834db9e4f13bc09f597156fa41abb. 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/QZGWX2188361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17caf4419ff82fddc04d4058d62372630124f69d424bf19d6facf489e8b79ea2. 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/SE3OH1413574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fd86e518ea7db04e48c1f5fdee5345a2f48c1bcaa04203818f709cc44f61dc. 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/SE3OH1413579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ba3ed9a0a60e15c014528b38b5d29511d4d37ea607f8bc098bf14d59585cd6. 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/SE3OH1413581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd496e0eda5d6c345df2975346d85897a02555ebfd73702cc9d9d237e3d3e1d69. 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/QZPJ32377675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675d5cac3205bb5698a86ab9e51b48a63cded2fd74583434fdfdad16057c99a1. 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/QZPJ32360617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1bdfb53c028941388827a17fbf466cc72159292453385e56cd65503905217a. 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/QZPJ32347374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x473ba9fd9f7b4d151327e93e1700503f14c662831f0e9bf1c8f67dfa4c0cb37a. 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/QZPJ32311401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e93ec4dd26ae88bdc201a25249df972fb3e9c0af3e07135463bb614b9215199. 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/QZPJ32284448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce1f32d496d2abb61420d90d2ea58e17b6c845f8c31e824e60fb156558f8f4b. 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/QZPJ32265447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb88e7896521dcb7e69eb5c917fc85be4e3f8d5296185e711e644dfb42fa3b30. 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/QZPJ32224267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57f0c6a38607e9ea5fdb4c3eba0e169b50e6a5ddee9a9f2ccf89f78b4ecd134d. 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/QZPJ32213693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad392243b895ec49cc14403e242b3eab6757d220ad5560add7f65c5a0b7a68e2. 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/QZPJ32211386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0f0e8b62237c7230055f7f16e4ae22cf0546b6b671ef2ef37a23ce02088cd3. 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/QZPJ32207072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f8000c5439ee4bff8b60b238e205ec2593a6ba02a9b7884171957f76613f39. 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/QZPJ32143117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3740c9d8cb49f865b62e2d9dadc506317a6834db9e4f13bc09f597156fa41abb. 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/QZGWX2188361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26373e6187af518448d7b808d8314a9d239613a9390a93b83489bfaf1dc0030. 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/QZGWX2139500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd060865f3fd337ab175510eb2d4256dd65e7c28fdad0f8bef8a4312ec260ae. 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/QZ22B2089834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f377a9008c85072af15e2f4e45a3cb10aa0974c0d7f47f1e7d2df74e39940dc. 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/QZGWX2020965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742dadbd38622579d1767935e7a67353e6b01cee6375b8ce25a8d24dae619cc4. 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/QZGWW2023763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d67ab968d402850b1cd88ccea0eb521827c430a7275872e779545f2cf2e6da. 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/QZ22B1922028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe146688caed667d2501c5a32d367b021eebcae4f2942d80ea93d787cd5295830. 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/SE5BU1700512.