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 0x44b44f3a0e4ed272711170e5576dddc0e39314d5d01f461bb045305af17cf4ba. 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/c8401188-3b89-418f-9848-ff481461a6cb.json and https://artists.proofprofile.net/proofs/artist/c8401188-3b89-418f-9848-ff481461a6cb.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 0xaa1be597be4756d059689abc280b37961b9421ccb84c28e89afefb7a2c6bf356. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZPEW2315607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fbd6093855b3475772a449fb19fa5ae0d6b6653b126b4783f0d5cbdfed9bbd7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZVEM2365109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d651277b4fa11ebdecb7757fa0d4b078c0d163b96072e8ac26279370497f55c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZVEM2365110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb687c286e1f90e716801b868b7dd3f40adef15bf798626bc37c34e0ab6e51e. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZVEM2338967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80eee46141614ebe7f4b45037c4e2a89308d3046761f59e4a7e8aa290e334701. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZVEM2357381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2686574345cbf816bc397a7e3da26fbc32221465853185736a6453317c596d8b. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZPEW2402379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0263f7e5625ed51fcd3260f4004b10a86479d6fd65ca9c5ef742508b7786ea9b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZPEW2402381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947dec36b2e1906efcf4bbdb9e87e29df21d0fc7fe40e36bffdb792fa51d32cb. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZPEW2402382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a8189539d445840fef0a2d15e12c61eafef45f479f8b7004da7e2e32f1d76b2. 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/QZPEW2402384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04eca34d25305e44970c8ad239b91fa2695f20533d672ba3cbdf6d46c2f80d8b. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:50:45Z), 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/QT2VB2436976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77177d087b4ebb7e2a59f7b561f8b763c386294cfd40d1aa0ef19dbcedfa50bc. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:45:35Z), 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/QT4K42557992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5556eecad09182c072d063ba4dddefe203ccc3372b8675b033d498bfdb4b4a7c. 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/GBCFB2400690.