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 0x2f63118d8510097edebc34bacb7ead7be593249d1d4bd58a61c3933e060985ed. 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/bc4634b1-152f-4976-9cc8-a1eebb0231a9.json and https://artists.proofprofile.net/proofs/artist/bc4634b1-152f-4976-9cc8-a1eebb0231a9.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 0x7b0785576ca31cdce70a4ba7230005f5b0dfe440ac43e68feb93e9c30aee3eac. 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/DGA0M2322431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42899cac21a4a24c959e6d65d814b610f5bc36db727ff89d952ba5a2e635e63. 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/DGA072304397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d1644dff4e55fe7b705d56368751484d37fd9e40df25b1beffb6141937a6425. 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/QZTPX2214573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd976ef94ae94b3719d71c77c1f10014f0c328530a00953a1b539b7b6edec73e2. 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/FRX452490335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28fc33fb076d4c0c39f33a4683d2283a3e00f6715a5d87226a704a4308089ff7. 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/FR2X42419662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c627eb33b056d67baab0802259f2fd413461fe1ec16c34eaae2fb417b173320. 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/DGA0R2344401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30db4b3ba99047d061a7bc546f101f3acd1597c983239f7f1823c20bfc31129. 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/DGA0P2357802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9abd25894910d076d3ee69a9da6b8b2c393987211b4ee8def3129e89c389d8a5. 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/QZGLS2113642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1dd46176de7a897134444be6244704386d2247c70d2ad16847e58d7e678462. 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/QZGLS2113644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf1e5e8c5f019245aa2003697a808408f48e45818f215444acb99c23f63f52de. 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/QZGLS2113646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19a36e69b713f04fe03e4434dadcb83f724218641a04b4cd911aeaa498efead. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/TCAHK2369818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4f3373f40791f9412ed7b58169933d442b309eb66a3cc9c8863b8c725322a3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZW9M2260982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42899cac21a4a24c959e6d65d814b610f5bc36db727ff89d952ba5a2e635e63. 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/DGA072304397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0785576ca31cdce70a4ba7230005f5b0dfe440ac43e68feb93e9c30aee3eac. 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/DGA0M2322431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0b70ea668ad393585a41eaa0e3bdc76e93fd2928dd7ee9724e6742d7b7c068. 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/FRX452490328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8550b060af8eebcbfdc9d1f963f5eae897fef999a713d5c82846d9eb55ff612a. 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/FRX452490330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da173a1c203fe8ed0f417fd3cd36f907319ce86b8717babc70418f1570a8693. 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/FRX452490331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3af298789ee03ff2ed8f6f42391569c780814c2e4286fe7c01fc5589e3b4a20. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/FRX452490332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c5ba6863474e375c2dcd090a5342c8f0bae6e49ca409aa0ea1afb340924cb9. 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/FRX452490334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd976ef94ae94b3719d71c77c1f10014f0c328530a00953a1b539b7b6edec73e2. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-21T17:04:09Z), 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/FRX452490335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5b7cb32a46e178c506dc6e1929cb2e227026ba3f4a38000934a375798f4ef1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-22T05:31:10Z), 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/USCGH2206380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c1232e0a06485925cf0a184769ea15c045d9fd5c28fc9c01c7d58217b04872. 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/USCGH2206386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8985f906c4ac1f9583e591a616d96954fd20401dc86ba237c9b97300e0ff6e37. 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/USCGH2206387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789568e8d5cc5c78d208adc6f0170ab28f7b45dd65f84e93730edaa295a9ba37. 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/QZNJV2521465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d4079dd1100c82191c5e4d36e1c7938ffd57e447973e2b3739e3e5416338ab. 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/FR10S2574851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee435a3970c0896a1ab9c8759626d84a070f35b3b2bd4de7a3c0d351082b2253. 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/GXBAV2297535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22816a9c489566250259e91baa05c26c17fea09a3f25b0d7c803a7e4796cc71e. 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/DGA072335807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe432492bab81ca92eaac0faa96b592e46a657786d01307a711f6f46d2a433e4a. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBWUL2388535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc904c69c8cc78b257f77c8a6e091c12c44478861e56a4d114d03b001b2cbd2e9. 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/QZGLM2331368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70ae2732fcc84a609fabc341ab57b310d03ba8f79c273368c76491038f690859. 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/QZNJV2029662.