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 0x7634d4509b747c395815ef02a1db21c7d1f558e6b9c65784fd0edeea3a63e538. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/23267624-a47d-4592-9056-91013e5a5626.json and https://artists.proofprofile.net/proofs/artist/23267624-a47d-4592-9056-91013e5a5626.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Singing Europe: Grandes Éxitos de los 60, 70 y 80 (Grabación en Vivo)
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 0x5d61b212ae442385b364e760d236dbc9941a0c7a613c02344f2dc441f9aa5456. 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/ES71G1635493.
Every Breath You Take - Grabación en Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05f69b839067ce3072959a30cf2388e2616825a92db1234f38021589846b9738. 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/ES71G1635494.
The Symphonic Beatles - Grabación en Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeada790d27c2972a88355f7cd545abfe47c9882cc3b90cd81fbc707c496835c9. 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/ES71G1635495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e40e6013508e583bc88fd8d0f3c047a481a7d5b24eb5cfaddd961f130eb7b5. 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/ES71G1635498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3580e649c69e9b2d9a4122b4f527eeafe7751ae0a5568fde770591edd6591. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:51Z), 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/ES71G1635499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf675700fec38e5a0e387d657feee71df6820ac0fef6a279397203dbbc40c1e47. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:47:01Z), 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/ES71G1635500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46722e7ef8b31ad70f0d456c0225f8b7c1c588b1df9e780ee53f3c61c92dd84c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ES71G1635501.