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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2022a2525998b333de56159ddf4d749be9f7ee9c9fbbd150956fd4456979bf9. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee4be33c-1331-46ca-a9d1-a81bbe8e6112.json and https://artists.proofprofile.net/proofs/artist/ee4be33c-1331-46ca-a9d1-a81bbe8e6112.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Fanfare Trumpeters Of The Royal Air Force
The Choir of His Majesty's Chapel Royal, St James's Palace
Choristers from Chapel Choir of Methodist College Belfast
The King’s Scholars of Westminster School
The Official Album of The Coronation: The Complete Recording
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ef589a2e1df022f198128dfbafcafd0384e6f9be6ac91f1e0cbc2653610c1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM72303854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2398b6a6b86c1d5bc1267d37665d95d207586780a3dbedb19251006cd040cf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM72303901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x490ff0e1a44401fe22ac70cc59538af104dfc7c5fbc30341a94b386ee32985b9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM72303860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56942533591ecf1c420e0d717cf3e030b679a0af093feb268ba05da16a2e41da. 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/GBUM72303944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa009deabe2fd19ca0d30db3a1b18a4a68a4cbd22002ab71f120fdb3fc9da7e2b. 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/GBUM72303900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757992ed0e309b403a9e76bf54f126f48f74e9fa9fc7141468e97fbbed96ddd7. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/GBUM72303883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f2b287074eb93d8b8f2b1c414aedaee6a0813cd69f1fe35c176c5dad9dd1d36. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/GBUM72303881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d121bee1fd73f4a785a2c7e34576766cb020e9e738a80a966fcd2506137de19. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/GBUM72303939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2908a25bee1c95589e1eb1027a2f54355ac31e9b3ba9d33b9f47372534a0304b. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/GBUM72303882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67204574f28a7309399122deabcb01a6eaa0ebc30b68210516cf8b2f3c1a69f2. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBUM72303942.
The Official Music of the Coronation of King Charles III and Queen Camilla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e2398b6a6b86c1d5bc1267d37665d95d207586780a3dbedb19251006cd040cf. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72303901.