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 0xb7afae9f9eb7ae03626ae1bb9c9258027fe03ab332a5b4da53554a9bb22739fb. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ff866ace-603f-4823-b702-2d6cb228d1e0.json and https://artists.proofprofile.net/proofs/artist/ff866ace-603f-4823-b702-2d6cb228d1e0.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 0xf197e50b05d4647707b5f047ed127cb2eddc8b07904d31b796f4ed74bd718318. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:04:30Z), 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/ES5150784000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909a3ebec52b4923b51d0774a5d7b0f1a715392a4340b82d9fed327316a1e157. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ES5150784001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f306ab09c6af3cdfe106bed2d2c7f6e4009bcffd4c5e281c53220f818042c30. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ES5150784002.
Can't Take My Eyes out of You - I Love You Baby
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7816081ce9ab08dc2e39ec6494bed14b21ba71c3068a672afe8f2e1127a8f252. 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/ES5150784003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a6be659d914ae0d6331228497faa6714e35c601ad8aeb2e01144e22873372d. 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/ES5150784007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283368e1b629179bf3499b4142fc513396096e8799c585459ada966fc153c29b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:05Z), 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/ES5150784009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x714e3258a130361a0985fc214e2d6e25ea3dbaaaa28268c0b4b7996bc90c02c9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/ES5350902738.