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 0x42045fa4d230eec0b09b8306906aae26b84013ceda8ad2f34da603de0fd2c044. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e76c318f-48fc-43ac-8c15-0fa1c98e83ae.json and https://artists.proofprofile.net/proofs/artist/e76c318f-48fc-43ac-8c15-0fa1c98e83ae.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Communion Service in E Major "Collegium Regale": I. Kyrie eleison
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 0x2afcb44ed7bff71af939cc1ecbb5719391f8501d67d1560ece644f13a3d308a4. 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/GBXUX0827002.
Communion Service in E Major "Collegium Regale": IV. Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcffc984b25e57a4e89b2e96fdbd531d506b5b98eb9619f4c47deb4a71d36b885. 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/GBXUX0827005.
Communion Service in E Major "Collegium Regale": III. Sanctus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11c44d891f3eeba98afb35c6a9e27fcdee79bfc5db7a25d0a34b55a31368e75. 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/GBXUX0827004.
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
Communion Service in E Major "Collegium Regale": V. Agnus Dei
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e625424c0a25a2cd119c0b7d92b4ad8f9b232a16b18da99b0d9e736ab60b8c. 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/GBXUX0827006.
Communion Service in E Major "Collegium Regale": VI. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af449928e45f42e483b78f05437bb6d1ca418bfcd4e11609dfe671c878fe373. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/GBXUX0827007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e6191be4392503d8e027780233ff898e81a55957c18586c3e3a6f630350846. 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/GBXUX0855406.
Evening Service in D Major: II. Nunc dimittis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9dd9b14c0c295e839fa19b31087992306aa3fbc5371d568eddec03d8101046. 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/GBXUX0855416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6432996c716bda30498f8a6037ddb96a33e607742ed4445d022a1b7b4a7a3c8d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/GBXUX0855401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa336b1186ca02565a0dc4ab44fa71fe6d31cc65add174de7dafbdcbc96e1d47. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBXUX0855402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab56978abbe5a8695dd2cf4c9f4a52e890c1fd5c997198bbdd99da6807c2969c. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBXUX0855405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378849dd4b99ff2bf02244c98631b7e48ded58ca65ec4f735b22889db1979064. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/GBXUX0855408.
Evening Service in D Major: I. Magnificat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e6423d839aab16317218115d5e0064d445ea23ea1f82c4126b9e87c6284ab2. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/GBXUX0855415.
Choral Evensong for the Feast of Edmund, King & Martyr
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56fac9a87ce674d1ee06838aaf2af465827aded290438079f0ce8cc8b661bf50. 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/GBXUX0849312.
Lord's Prayer - Preces & Responses: II. Responses
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58235f71d3698535c82f17811f0acc04d5b40c333accd02b939d0b1834d73a42. 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/GBXUX0849313.
The Complete New English Hymnal, Vol. 15
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fcecfe7344519a52399eea86d20355311c149b7afd523cb625a5faa7f684ba. 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/GBXUX0871501.
Nicaea "Holy, Holy, Holy! Lord God Almighty!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdbe9dd9f8b7342e2115d64b3a00e70b40d101ccbe72eeec9b95ae8a083adeef. 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/GBXUX0871506.
Crimond "The Lord's My Shepherd" (Arr. D. Grant for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6e4964f8da0056e2c944b39d6d2f6137d099425e82acc11d71e10e7202997e. 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/GBXUX0871513.
Bow Brickhill "We Sing the Praise of Him Who Died"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065253474b2d932df8151f031899630fdc118ea523996daa9c4e62cf07c1c997. 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/GBXUX0871523.
St. Gertrude "Onward, Christian Soldiers" (Arr. for Choir, Brass & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b37b9156eae00d7bb1328f8b40524cbd49054fb93f787a21e3a79eeb3a5256c. 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/GBXUX0871529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d9db8430f35f40d6166ea867ac10b0a6bd35325c2ce02dac87ed24216af56c8. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/GBXUX0871509.
Crüger "Hail to the Lord's Anointed!" (Arr. W.H. Monk for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d49c496d78f59b858d2fa934e574557aadfd54544582eae2a5f14b46841049. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/GBXUX0871518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9569ebd21fa1f873c08e6b678e7c4ae1fda8a7674fce483b97042e4beace2665. 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/GBXUX0871522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9ad93216b14dac3a5eeae8a6545ed4629cc697fc68f20aae3db1c706787a3d. 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/GBXUX0879811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63a3bc62bfa6d6877ee0279e3abe3f52b20448488772b6690f06725be3586f3. 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/GBXUX0879801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c015679cf3c6945fec61c29e31d3514c6a03ccc73e773401e071bf71d5db46. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBXUX0879810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088f709cbebbe9371dd52f05ba8bb7be1c5507029f90000fd19cf72ebd13cf53. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/GBXUX0879817.