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 0xe512c49d13fc744e8f1ca004742a717100430c1c9f890f6e4958ec6f5176c9b2. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2485d25-20e3-46f6-b51d-41c5b9c67969.json and https://artists.proofprofile.net/proofs/artist/d2485d25-20e3-46f6-b51d-41c5b9c67969.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 0xd03777ff5831d698a7c574b2e86595e17694867fb2a38dcbe8fa21152415a021. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNWR2563792.
Lo que cantas cuando nadie te oye (Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e58a3b512d426553ee2c0c63fbed8ba3fd9767ce2839855a0abfe6dfbcba7d. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QZNWX2539533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72e38efca6204b0345e2be4141800e1a3ceb8caa05ca89cf5a29548f8bb30a76. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZNWX2539534.
Lo que cantas cuando nadie te oye (Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91238af6ca6c847506a7d34f2319ea7202c5948f60e7f8ca16cf8a3e77837f15. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:01:52Z), 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/QZTAY2546257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc1568ab2fed010bc24ca660b72bd45c0b261a141612407d068c97c11ea53e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:21Z), 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/QZTAY2546269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e17e31e84c08e261686bcfc68f18e3a5218500ba40a12b0dc881eff54650ddc. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/QZWFN2535343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329d6e56dc283a5029a792fd005b5de6f09ed0823f9cdc4d86632444f7ff772c. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:20Z), 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/QZZ772527442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5ccd2b9993804fbb216dea3de1ddd2a5a75b676ce54a379931507ccf637dd1. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:43:45Z), 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/QT3F32518070.