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 0xd231a879d29b58e9740d6dfb1a8ab62eb9b6044593874924f367a00156c1b098. 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/99360436-d7f2-4974-b56f-c58b207431a3.json and https://artists.proofprofile.net/proofs/artist/99360436-d7f2-4974-b56f-c58b207431a3.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 0xaadb0e7c0d2f77135f3b9eb54ac818192f7227538e39ad12dcc3cc5ef80a65e5. 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/NOCKK2243010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e23e3608a65e6c758e082f6af50c67d6a9af058ed61635b8371a817cd0e028. 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/NOCKK2243020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29412c4eb07424d87d5090f3259d5aa0c1ecc1bb99b8fe2ced651ffe08a9ec74. 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/NOCKK2243030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc0e697347af7a1e35bd79afdc004f54a19b6415b75fe2a79c5d045ca49272. 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/NOCKK2243040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3772219f525e09201f4b27f59946260014000e9f1365251e921385e89d2f7e2a. 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/NOCKK2243060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x125182629d0d0cba0cd0ac2bb71cf51b4150a90d999a7a7d9fd6c3e16aa03050. 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/NOCKK2243070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891757442b118a2fefa66d666485d16f7258351a8eadf3e613c8b2bdedc18eab. 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/NOCKK2243080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa035a11b909f3a114d83b3e6e93c59405efcc4ebc58e03a30daf77f352e7b2. 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/NOCKK2243090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a2363087ca2b811bb060c7266ff2db92af4d83ed96b5f2bd9730bb815dd0e. 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/QZDA72417799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47f249bce486017621180c87a9e552c6408bb52c7401e09aa47a4bfd5dcd4f1c. 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/TCAHA2389507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe42d66164b7702c44d7e742c9e4d1be77ed1da92b42387ca801bb513ac6f618. 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/TCAFN2177487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be724beefbecdafade2034a9e77f0d14793ce1b9b428fcc617d1af65cb40658. 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/TCAFN2126900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52542def6d8c1ca71f28e1ba19df9e9de8a4b6a21e69f687219de062ff73f5bf. 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/TCAFN2126845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1bcfa5e3dc4441704dd3515a531bd85c898122c6d20cc5bf71a34e003adce8. 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/TCAFE2008892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd026ba2a17fddffdc3025a954329ab706cb81e4df561e1d1f22fbf477e49849. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/TCAEO1954478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x344f2e434bd9f826ca5f1efa284b14da1c252ccbd7fafe06f89d22e2257aee48. 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/TCAEF1903437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a8866a47077a569744d9e02d23bc74621ecb56daa91dabe67931536424d445. 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/NO0UD1601033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ae42eded9adcb4447d2000a7454539414cf60bdcc017b92ebee780967e86b0c. 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/TCACN1684332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e05ca7705a46afacaa85ca35c472c90bfdf0d1356ba9563377e26e4ea41f309. 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/SEYOK1512318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9827d60b362afb7d23c308afe21311e787c8f1f7951b0ded1e66014b586bf8cc. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZTBD2428061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6f2e337c70bae2a4520598a07a8c94c6a6d538ba5c70d81a53bb258d82689f. 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/QZTBD2428062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7a9cb5ce532c042417859eee2612aa50d4bcf963e29352e3e9c265952fa9f0. 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/QZTBD2428063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146279dc2f2dc75cb8b9f94d073c5d5f618d59ff74b8892d47353b615048b0cc. 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/QZTBD2428064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x469e9e13cdf3c8832aeb9b04ffe174f6b69c51d06e67a1472e8ba925254d4a8d. 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/QZWFR2397698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a40ad15e97567937f0c9fd173824e839a2d6fb739656d1f7edec6c2ff72d5c. 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/USA2P2506545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de54460e7f83b589c0ffcd812a6b112a4a21a8f0260e6a5ae9562369cd084fb. 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/NO2DY2300671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f6a4ec6fde904210d7077d1fe9257b0e6aa6cce23777e520a8e35f91c333a8. 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/NO2DY2300672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90dbde8ede49b39c1149940a6d814a2e3938b550009e14ed8e4c361d16fcb989. 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/NO2DY2300673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70aeab12a513bb8168f30a5bd94e8aa5cc1beb0a9a8956fae9b1b410111371f2. 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/NO2DY2300674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82fc4af09e627c57069025c79d017752616cd9f09c11b9e3f6b8575ae823d7e. 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/NO2DY2300675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d3a470411b4690797a09dac0cfeca719d3815c3024978817d5ac3b65612fa9. 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/NO2DY2300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d6fe612fe01b3d654d0c4710b39ba8229bfca2ca0871299db50911ffeaea2. 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/QZFZ32483841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943d6fe612fe01b3d654d0c4710b39ba8229bfca2ca0871299db50911ffeaea2. 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/QZFZ32483841.