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 0x4e656e53ed796fdcaa9ad839c9c2c58602a83fd4caa18f96075e43d47de05a25. 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/85d594ef-98da-4fc1-82eb-5a12a27995eb.json and https://artists.proofprofile.net/proofs/artist/85d594ef-98da-4fc1-82eb-5a12a27995eb.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 0x4182998e5e08cc1841f6de241122bb73c91ff4c2e4db5b6da2a0d60535866bbc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADL1867664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e7eea13a8a64a8344ed930747de5374ea53dfde72200cbeaf60cef89ce68ca. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCADL1867665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28bf9a315e7b002de35d0950e17641d5385ff43a6c4a156398eab0a4c1ea0789. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCAEU2034250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87af4a1367bd4a5519af2849182b98ef841dc910b12c303c7bc675444a6df506. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/USLZJ2429436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80992995acb16ff065add54a0a7258ba701f92a87df96bec97c7598bef3fa0b4. 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/USLZJ2429429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc9ec1536c8790f0d1abb5404ea9d1d8f839843e5c40537e1f9cb663d5c28f5. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USLZJ2429431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc01b152003764e9dfddf2232ae245061f3d3a28a6c5c8850cd107084e497494. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:04Z), 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/QZTRX2494340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc01b152003764e9dfddf2232ae245061f3d3a28a6c5c8850cd107084e497494. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZTRX2494340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255dac81ea5de7dd5521156527e535100e56049c455fdd2e6d11662eeb9af549. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ8A2582875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcadc76607db3a10a5698901fc4223f4418bdb9952555bbaebe2ab5d0bf53e66e. 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/FR2X41942325.
Songs They Forgot to Write in the 80S: Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537239a598af23d7de681e53624f64011c507cbc8241d432b03b3708755da29b. 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/US7VG2578105.