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 0xe9ce174ef09ce1013893c0a4d88cf026b93c0ad2c8d39608acacea3c15844696. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d5bf5ab5-90ee-4f3d-857a-4db6e9836202.json and https://artists.proofprofile.net/proofs/artist/d5bf5ab5-90ee-4f3d-857a-4db6e9836202.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Claire Jones - Journey: Harp to SooThe Soul
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 0x33d87a5dbcb3f49c68b5ce8ea059996da9cf120426c2c8faac770cc235eb43a6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:14:52Z), 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/GBPGU1100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x033578baa658186389166bbc28eb8312cb58b4c92faa30b1629722620142f215. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:47:41Z), 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/GBAJC1600045.
A Thousand Years (From "The Twilight Saga: Breaking Dawn - Part 1")
Across The Stars - From “Star Wars Episode II: Attack Of The Clones”
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd37f3112f1deacf78c3cd9e94aca5a18e0ea67ce1cf472004a3e53a56e2069bf. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:38:00Z), 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/GBAJC1700142.
J.S. Bach: The Well-Tempered Clavier, Book 1, Prelude and Fugue in C Major BWV 846: I. Prelude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e25476b8e80d282184eca98d460c026e31625bee51b727371e37c7e9aaf406. 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/GBAJC1700148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8ef1e59e9eb54f38153445e64215e85034c22cc6874ca8b71b085abb8f63e9. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBLLH0917811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd639a8229d7c7b78706719e2d597e5dff270ece6f1bf37cd66f002426dc95be9. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBLLH0917802.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch