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 0x3428e0825d14b41e1a1e961f99525d9bde06eea8b30f2a913ba185e1a3e3cc50. 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/d4e59ed8-848b-47c6-963a-4fc95e64324a.json and https://artists.proofprofile.net/proofs/artist/d4e59ed8-848b-47c6-963a-4fc95e64324a.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 0x7853c0277bf3d8cb529220dbc6a41f346f11f9dee6525e0fd929aac65e89b487. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:57:45Z), 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/GBCRS0112601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b1295b75a2a9c0160590cb0e25cd2bfa9781486ae4dd3c4f4ff65f0293437. 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/GBCRS0112606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856db380722003c0c96cf1382973a5ab236812c06b2caf52930b0211ae3bf6f1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBXUX0859201.
Evening Service in G Major: II. Nunc dimittis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25214ffe9443b34368847f1eef6eb95f4a5bfb01778546f62718dce808964741. 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/GBXUX0859220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d13917a4450d83b25c5bcef4c4865c1782145df7107d147a91961acdbd405c. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBXUX0859202.
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
Choral Music by Villiers Stanford, Noble, Jackson, Bairstow
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83db7df5cbe8993d60e57eadf85295adabbaa395715e3e6451b1ed3388f3c197. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6639671705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf056458ad62107eb781735c5b3f5f597e0120e53299c3b041ddebff04886fe5. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CH6639671706.
Psalms of David, Vol. 8: Praise the Lord O My Soul
Service High & Anthems Clear: Choral Favourites from Ely Cathedral
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570314ca12b140f4b12f41437afc6c7b24247e1f0e59684ef2b309ba96ce19d0. 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/GBCRS9911101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391d6c51efbd2fd03dc0fd545f5261d64f39447c01f2e2aea71fdd3e592b61a8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBCRS9911102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf84ff54b5a7fe50a2db69d9c4453b597c1361ad5f80a5ea988660d12304679. 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/GBCRS9911103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe235c966937780f67a893e906878b007adadaaadbbb0fb2d30ea603cbf8a2ccf. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/GBCRS9911104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0378469838c53a5829b33c23bb20f74b090b600b9c952e9357f3371eaacbc34. 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/GBCRS9911107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e90f109516cb7f263182428d1c0fae7cfcea45dfd487400cd79aa77abf39df. 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/GBCRS9911109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72206f8ed4c63a4cb42099255db1a86b63b31f083ea4a12533fb3fa1f16bd576. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBCRS9911110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f05e9fd5bd4f28a89a8470409b618b1dd64198f77b2dd42f8fd5c89acb8b6a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBCRS9911111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c867a751ed25e75f37f8707e1180dad4a5342885548131d541e395284fc47c. 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/GBCRS9911113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c71be9a93e0a0a149479ade82209c6060f2b6de8864e6860c8e5a4ff99505c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBCRS9911114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ed2d18b814d81fdf544ce28b08177e09b62b11f307645f283db5e89a2dd684. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBCRS9911105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fe4ba6a1f838acd6c8639289a87089be9e35e9cdde80c2ed20ec8833862ad5. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBCRS9911106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2c5fd0326a32ce6257b9c561d8315931363ba1d46d656bd5fc45a9996df0eb. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBCRS9911108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c567a7a7a0e43581c292c17f5dc817dbe172d1a897cb61b20c3a643c168c94f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBCRS9911112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b9131f5610794bd1ad510f0d38106d6a44ccaffb315f11638c5f0cdf615de1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBCRS9911115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1947b702401405f482d0b6d20f3f23fd15e0ffab9ce7b25b0cfdfa16746c4a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBCEU1678109.