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 0x739ef3ea75792e905135a74907ac51e2320c0950c2a872ecdce5497bd6e924e6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fca4aa11-e05f-4527-8f8c-d1c44989ef2a.json and https://artists.proofprofile.net/proofs/artist/fca4aa11-e05f-4527-8f8c-d1c44989ef2a.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462ef589a2e1df022f198128dfbafcafd0384e6f9be6ac91f1e0cbc2653610c1. 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/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 0x6d6c257969497274abb117a4a256ec773c1eb0eb0d84b9f758ab7f9f661c5c36. 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/GBUM72303868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9955c12871ce97cb2d8367951cdc338df3766a4c1d4aeb1f2a45c8ce406be1fd. 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/GBUM72303872.
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.
The Planets, Op. 32: IV. Jupiter, the Bringer of Jollity (Arr. Farrington)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38241bef53f054610a40549ad799a8c1b58d7cf88829f6552c1e5a122260dd6. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBUM72303867.
Solomon, HWV 67: The Arrival of the Queen of Sheba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa58594f3e6661a6fefc81328b99bf64e3a3d50fe793400b01f4468f2b37b34a. Chain 2 (Bitcoin): anchored in block 957043 (2026-07-07T13:52:39Z), 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/GBUM72303992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a51fa7c3a33c618ae124174b43b1c7ba4e2dc430ca774c52aa5e9326a96ad53. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:19:13Z), 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/GBUM72303858.
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 957124 (2026-07-08T03:53:27Z), 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.
Crown Imperial: A Coronation March (Arr. Rutter)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcd12b80be3a9139832802c341a9de8cf43aca87b218f4b611d16b4e961baa1. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM72303862.
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 0xf0dea9f89ddd401f0889db2f605b3764f4b6fbd7ebf99793c293d6f58101ec10. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/GBUM72303875.
Be Thou My Vision, Triptych for Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628da49575cb0a5279db08749a9830213a83a7522e13f234bdab75c76f6a0a4f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBUM72303984.
Enigma Variations, Op. 36: Nimrod (Arr. Farrington)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9285684da653650ab9ca239df322b4b4a6d88244c71d495c659c33e6fae048. 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/GBUM72303979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26643e213a591bd3ee4c6d5b93c2e6f19be8294008c6b201f29aaf4da0ad211a. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBUM72303861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa819b1952dc6887d52a03ca55bedadb4c6b3712b4668ba0028615a6ad8a01937. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM72303865.
Joshua, HWV 64, Pt. 3: No. 65, Oh, had I Jubal's lyre
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a924f83fa2bbb2c0e1b99506419cbf620ef0750f61fe14f51e2d1c0e9905b80. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBUM72303870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc36a3621f12520f543222fa11d04796f6be11c9e67abc887f9b74cb14eba8695. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBUM72303859.
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.