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 0xf5369245a61c25fd5728f7e3fd9d91769f15c8e92845384c0aa8f16353ec348f. 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/9123c880-a2b6-429f-96b6-bc93662fe9fb.json and https://artists.proofprofile.net/proofs/artist/9123c880-a2b6-429f-96b6-bc93662fe9fb.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 0xca0eeaed17de5f3dba4d2c5175a9517d92e4cab84d93e5efa2bef70345b89794. 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/US3DF2427926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a7391ad478d931cb546e2de08c55bc777b8e40f446919ca98911390a66de8a. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/US3DF2427932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b82b8dc468e509e5d63afb8064624e7f2c4f29db83c51d7526b50cd552134e. 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/US3DF2424936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e9db2c02de97ecad3517dac76ddfeb3b339c9ad0976d4b2bf87aa54227a191. 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/US3DF2443761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a7391ad478d931cb546e2de08c55bc777b8e40f446919ca98911390a66de8a. 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/US3DF2427932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca0eeaed17de5f3dba4d2c5175a9517d92e4cab84d93e5efa2bef70345b89794. 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/US3DF2427926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b82b8dc468e509e5d63afb8064624e7f2c4f29db83c51d7526b50cd552134e. 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/US3DF2424936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5298be82620bad7c0e554336ee6f5bd908336d173f855eeea8a4b5a2f4c2868. 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/QZHNA2352741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d6dc925399cdb46b956a106958161a1ecea4d57aa216194069ec8a2dd822c0. 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/QZHN52373501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x045991d78e60eb38a04150f41c40f68867d1354af8b075e3eb239ccca5cb3845. 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/QZDA82390112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b164175e0f2e0f6b002d62b96d449d380b0ab6cc6e28c13777a56bf6e1d95da. 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/QZES82288445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b994f038a243c9e31470284ad2548d572f9f2d83568e6adcf11487492f1f39. 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/QZK6P2248022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1f391b51159a2b63754a18a2dbbe265a2dd1d40f5e8e882adc30bcf4a7c6c8. 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/QZHN52141897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42031590189b972261df010f5698c17c3d2976ca5643167f599b7639c17a2f8. 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/QZMEM2117640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d410190e9f5f2149fe7b999cd4f6392b17db5dccc401fc823d7e24db13d9f2. 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/QZMEM2117641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c95d6288aee85f3ecf2db3f72cdb77b825ac4d711cf4ca85dfe04c7c498112. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:28:29Z), 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/QZHN82133291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde094ac7c82ef8299834b073d62b3df9fd788820276793ea9a028a5953ef394. 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/QZMEM2117642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c95d6288aee85f3ecf2db3f72cdb77b825ac4d711cf4ca85dfe04c7c498112. 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/QZHN82133291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1f391b51159a2b63754a18a2dbbe265a2dd1d40f5e8e882adc30bcf4a7c6c8. 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/QZHN52141897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cea5f20276e54ccf322025a809b8e89eca2ee2887efa117aae2144402fe0195. 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/QZNWT2018037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28ca62d68cdef97f6eb7398c550e82fadbee377b55c861ea36f9775351a0732c. 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/QZHN82020078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bde34fe6a8a1a48e853837aefb7fe304852c17359282de00da3b6b033687ddd. 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/QZES62021358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e092e876cd64659ae9054c3d84473cefc03e24b6392de1e28e12b81bf7ccdb0. 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/QZK6N1982222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752a6fc66e41543ba4ee5b35c1c6268c8da16542e19144a8b74c47bde84475f3. 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/QZHNC1997966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf658f78dc4e832aa03fd63a43dd18135160cc5915186c8eba8382485d4710240. 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/QZHN51937013.