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 0x4721c363fe4953f6021d0411b784e398c933d04322b9868af44c9952fbbe9aa0. 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/5d15b9f6-07ff-4e3d-aecc-079b4f306e99.json and https://artists.proofprofile.net/proofs/artist/5d15b9f6-07ff-4e3d-aecc-079b4f306e99.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 0xe37d13ba384c0e2be4220278b01ebe7b0cdaea4dcd45b258ea5423e264ae0cee. 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/USANG2040506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d738c6b9765bda065d14adc530d3600f3b2248245b31a7838e41a3c5786c126. 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/USANG2034501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ff13d19995ddfcd640c40ccdbc1badb3c7f2b9b818c7214ece41147099f34b. 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/GBSMU6964747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05da94bddd0f3b241d8e49d744d648f23a93e425da881723e3bcd342b99ea45. 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/GBSMU6896070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc97c5a2a9c312f9d88e301681b447068e50652c039f6137c0416e2934aaa6b96. 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/GBSMU6072690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb3bb220efc0066496bb3be79e50b83ba6d8be50642c948f9fd485f17612e96. 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/GBSMU5691127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8bd76af3077204067ffbbb2c430bc4ae15b15d0deeafc4173f1160baaf3944. 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/GBSMU5691060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754a86189d04c42d166ec633bb70e6f74146f98a74a6afc2431fc3d1458d434c. 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/GBSMU5576783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a5f51695d0e6b89e410dc46c81c97eeda6c792454030239cbedd225f54afe3. 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/GBSMU5296899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d0ef9fadf50ae05073309d61ee155da4912b01dede4c315af11ff0688a1084. 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/GBSMU5525100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8e494cd0e713d40ce3d40e28e3ebf86e78e68d2d8cec49bc37114a4952044e3. 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/GBSMU5415756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ef3a207ed19ab22f3b29d0e618bcabf6d69cce9e55ec30c2993e043462fa3d. 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/GBSMU5398795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e1dea41a6aa222f8d47641286b4e8ff481d3f27963f50a5ffc8f21bc170f17. 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/GBSMU5296941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c366e178477f9e0904d57d897fb0ab32c445274d3a00676fb44810a4baabdf. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBSMU4707167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b3941b17eaf13ca67d7f3e70f6d00f1ea8f6cedf9257627da19a447ad910ac. 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/GBSMU4707168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a73d99c6adff2daacca15bdf1d0f32e3445ad392405ad74716cc8e312a89f00. 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/GBSMU4707169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d6be7767f1499c1a9257179b0420f60969d81eb6b7fa59d795194ef3750673. 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/GBSMU5576851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c45af2fac8ea982301609a68e6e49f50347fb1896c153357930235861b7bc6. 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/GBSMU5296883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e527b3a516e9f6a7432d527a69b21cbf0aa4432561637255e2624313ef61a56. 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/GBSMU4118268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eebe5d91eaf4ad8e6174afc2f90a522db237f8719bd4f41ed00d09ccfcd921. 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/GBSMU4614466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e14d5b6e8159762932ad698f1d8ee7a14d072bd6160569f9757e7fc657cfac3. 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/GBSMU4167182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d6c590392e006e819c4dd7744472850143c0eb9bbe3ff96934d87fcafe02fe. 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/GBSMU4167125.