1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4336e8a1d971ae92b29e45f766aa1651a9249c24e62a8ca1423acd7f3d54bafb. 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/20382c10-a81d-4c6f-a758-9f4909c88ca3.json and https://artists.proofprofile.net/proofs/artist/20382c10-a81d-4c6f-a758-9f4909c88ca3.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 → block OTSBitcoinBlock must exist at that height 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 0x76dd66ef8617640f802bbba5690a49186809fcc5c4c5faead3e131ed6f955ae4. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZMEP2205412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4352934029891ce11e326fc2f5e6176305b349647b0b51cc8626f71afcd8a5de. 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/QZNWU2223092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ab9f587108802eaeb2160929abf88e4dd617cd7452ecc5ccebe00d0a20f998. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PLC062389176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db0cd84fd154e783ec4161b78c83c33476cfb8183418ebbf99e20ceaf2946bf. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/PLC062377562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61903ac4047d3b7a030bba66723043f459fc0e475ee1f94992241a7e6de0c271. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/PLC062413528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef66e8f4da58715314cfefaffd7b861cdd0ad8d14a03180c9eb2fbeabedce52f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:33:51Z), 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/PLC062394023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df2229de40c11b9259215788ea056f5e79f94b1d4457a8510fd734bacc09a42. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/PLC062400997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b6f0c6e841bd33fc3503b9cdbe035a54b3cb5f7835d3476a7a2bb28af5ed68. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/PLC062378560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a307ae97a74469eb9a3950db16f29943e5a9b73deb70539833c4e9eb1941d3b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/PLC062413531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0217bdc8ffc41b0938046f39b974ac4883c9acbb9aadbfb6d92589b17d5a087e. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:58Z), 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/PLC062409836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f9acf377ca4015d02d04df04f995ce3de496dd92d8a415404de85ed73e0c32. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:15:22Z), 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/PLC062413532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573b68c130f46dd377deebdc757c322aeab89b0d92e4fdddc070116723d448a8. 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/QZMEM2481945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69489df6d884c0eea20db89d3ae221d5dca63d54efff68bf1024c19e04f3b35. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZZ7M2432537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666cc9cb5abd7fefb6854a488abb1d7ec9748e42c542bb66d9cc1b4e819ab211. 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/PLC062406066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe400262643ea812a1f5916a4c3b389e623284cbececce53b8d12c35af888207b. 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/PLC062409813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04e7d165b77595ba01c5a07e14b0b559688259a39308f307548036787618527e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/PLC062434483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af40734df58e13364e3fa3e1cd411d5fbb4315f53900154eeca114f055e7db0. 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/PLC062418758.