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 0xb5bbcd7cf00377bb854fa1aab18415af9b14e815801fe62daf32a2d77730c5cb. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/de9cff19-3646-4e7b-b4dd-02b63db23746.json and https://artists.proofprofile.net/proofs/artist/de9cff19-3646-4e7b-b4dd-02b63db23746.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 0x08eea548776673d55ac6047d1d72ae44b860cebc5ece94acf10223aff97bb544. 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/QZMEQ2032133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6743fa5e5e61619c503da27fc4c80a4a6ef69a2b2f282c3427450f3187599. 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/QZDA72188752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de2015858acb506748581525e097ca7bf438864b9031a2b7fd4f2154b127ced. 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/QZDA72188753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad54ac740f3708c99801c63c149ec6fae8345a2a55bd60b08f03bc9a45fe25d. 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/QZNWX2047233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5ff4a877d033a342991d069b4940263b8bd2a6cb7d26fdbaa3c9194513183. 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/QZDA72188755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9db5dfcb98a7994f402e9e3d77bd71a0c4796fe8081c870c6d3bd2f3784a87. 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/QZFZ52136149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1483e7ed330bb13dd2786c176304cc1fe2d7265c862b15e7afc11d5e3d4650b. 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/QZDA72188758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c36af0936c6e6e19cbb2c7cde34e420e68d87ae077cfcd9fa765d406a8fd506. 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/QZDA72188759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06caaed52c36502457b7da6479c5cbd279d95038294a1c9b85a7417af011b42. 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/QZMEN2332136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a9edd7fa1c507ee85a414fb9d7db008953d775f8919efd80aa7382468b8da6. 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/QZNWS2347104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26af6e0609c2b9efd2d1339524b057a58ac20b9b3d1a4fcc0fa69c68099fc20. 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/QZNWS2347106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eea548776673d55ac6047d1d72ae44b860cebc5ece94acf10223aff97bb544. 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/QZMEQ2032133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b6743fa5e5e61619c503da27fc4c80a4a6ef69a2b2f282c3427450f3187599. 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/QZDA72188752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de2015858acb506748581525e097ca7bf438864b9031a2b7fd4f2154b127ced. 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/QZDA72188753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad54ac740f3708c99801c63c149ec6fae8345a2a55bd60b08f03bc9a45fe25d. 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/QZNWX2047233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e5ff4a877d033a342991d069b4940263b8bd2a6cb7d26fdbaa3c9194513183. 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/QZDA72188755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9db5dfcb98a7994f402e9e3d77bd71a0c4796fe8081c870c6d3bd2f3784a87. 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/QZFZ52136149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe17435e1538f43beada5663ad20ae9b19bfa3333adc387107d885e0e2e7eb2d1. 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/QZDA72188757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1483e7ed330bb13dd2786c176304cc1fe2d7265c862b15e7afc11d5e3d4650b. 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/QZDA72188758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c36af0936c6e6e19cbb2c7cde34e420e68d87ae077cfcd9fa765d406a8fd506. 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/QZDA72188759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4eddfad90fbd859dae3a2dbf9fcd10d6aaa56e0b8de95af6665bf172ae33538. 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/QZDA52479485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06caaed52c36502457b7da6479c5cbd279d95038294a1c9b85a7417af011b42. 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/QZMEN2332136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3245fad2fdf6998756a2ffa5d849181b331ea4ce8b1f729d28b55aee298da78. 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/QZTAX2287319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ca431359f95aa10062d4fa08cc2cdf60b6fbb80d937b70f0421aff0befe9b4. 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/QZTAX2287320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77e665f124e0f245f8e114d0760cafcb5b225089289d329f662fbd3cbe97159. 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/QZTAX2287322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99267cf7865e2e91565cfbae408e740a54aadbd4d70da79b379679b6422e3d8. 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/QZTAX2236297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9db5dfcb98a7994f402e9e3d77bd71a0c4796fe8081c870c6d3bd2f3784a87. 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/QZFZ52136149.