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 0x8e12b42b72c953fe49cc3dc51e24aaa5903fa4775ecd5ae4c3113bf4b92f77b1. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6532be6-d899-4aec-a289-bb3b788b55ec.json and https://artists.proofprofile.net/proofs/artist/e6532be6-d899-4aec-a289-bb3b788b55ec.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 0xd6fa0682194813e6a37423b9878b7c059c79bf176bb8fe9626db8551b4be6cfc. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/QT3EX2481995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9b147a8010a38b7a29e10021740edc727f1fcd8b3ce74838415dea2ed7cc180. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:23:22Z), 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/QZFYX2510960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb3dcfa2eace44a886938bd2ad549dbe1f54d0c605cb6e85ed82b4430d388db. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:38:47Z), 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/QZFYZ2562535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cb3fe5e8319c9d10a4eaa03a87e07231c36760efa223e49e2e96a15b49d8ede. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYX2589877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b28d81a1edbe640594d53ff932fb853bbfc914d4b348ba3e8ad61dbb157377. 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/QZFZ72586042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6037a211779711d7b417153fe2f0f80c0efadb6709dc7e58fb19fad023628916. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES82555224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bb54cd883cf622ff88146481ea4356d3904d5c5e9514eb4097ad8157bca45b. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZHN82553710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f77dd21857dc2f0dcd84867b1213794f72befb2c911f35a552706d4ca8e5f7f. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CH6542540260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a80cf7cda0e5c56d5e852a4cfa5e859a334ea2b492188c36529030ad53d375. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/CH6542540261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf51863fc7794d2f296a2cbac340c2d5996a7665a973d15b83e1f6cebd45c49b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:21:13Z), 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/CH6542555046.
Mtg - Talking the Moon Vs Pique Dos Cria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a55a12fbd0620455866279918404656ffeb0556ecd6e0ce14104a9a2b4e1445. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/CH6542561869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57f61cab44a3596ccf5be3719fcf389de2dfabe0aab5cb2be350126930bbf24. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/CH6542568692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871907a5ac99fe4ea88b28a443edfd7b5e02fde111b4365e14123342389b5238. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/CH6542569667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289af480a79b440ed4d5505ffd48609dd1018ebe8e0aa961a876d7324d7fa833. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/CH6542585790.