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 0xc02cd2cf1aeaaec52001ba2b1f5f5c5d5c0ab6afd5b3e26f26d567b70e6c0ec4. Chain 2 (Bitcoin): anchored in block 953759 (2026-06-15T08:04:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2986d65-e031-46c7-94d2-b29272fd187e.json and https://artists.proofprofile.net/proofs/artist/b2986d65-e031-46c7-94d2-b29272fd187e.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 0xdc4d7429efca4f3f25d509d692cc45c45ebd4601353e7ff74afbffb8bfa29611. 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/GBXUX0870201.
Unde et memores "And Now, O Father, Mindful of the Love"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5529bf7ab7fa4479cf7d5763063b0a0cfc9022b07abc0b1fb04b6ab504089c. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBXUX0870204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d2a17da73c50baeb7635a6c6eb1f14a431abb7ee97a034211bb114ecd2862d. 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/GBXUX0870208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91358d960927ca1617821c932ef8d1a13d8841445bacd65b249f9acc5bbabd28. 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/GBXUX0870209.
Salzburg "At the Lamb's High Feast We Sing"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22814c1c6dea74a4f9b47427eace0d6d68da72cf7afe8ad8676c40696245592. 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/GBXUX0870210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad53ffd586bf430ab39bc0949c979957d971064c6a56a9796c53598d9f72d222. 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/GBXUX0870211.
Golden Sheaves "To Thee, O Lord, Our Hearts We Raise"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981f0fb2b767e768e4db34e899f1069d079f3b158aacda346442ba84b5544b11. 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/GBXUX0870215.
Westminster "My God, How Wonderful Thou Art"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875e40e4cb76a5e0d47fb3c3ead19b1dc0610d86b0a6112fd821bb168bde85ef. 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/GBXUX0870218.
Wychbold "In the Cross of Christ I Glory"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9e189fc1c0708f8660c881b889971d75a770790e644cc747179e2f551f24b. 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/GBXUX0870219.
Oriel "To the Name That Brings Salvation"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf356c36f734da6a7398d8ba697e8f859439ac230fef94557e8b96ecaba43c324. 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/GBXUX0870221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32563e5a626b71de55cd8a7f14d3cbc193f3a0f2855cd6dffda53a21217a94dc. 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/GBXUX0870222.
Spouse of Christ, Whose Earthly Conflict
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9960aa49806a84bba89c8eac345bfa5c428bc4620e216627835d88d6a5d724. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/GBXUX0870202.
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
Binchester "Happy Are They, They That Love God"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09db4a51569f8836b9fd53030275386f5c6fb7d3caeff066843c7befddde47fb. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBXUX0870203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c901ed5bd4cdbbdfbd5049ed46ad81fdc9d8bd5a58887b985d41032ef25993e. 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/GBXUX0870205.
Were You There? (Arr. F. Westbrook for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dfd3a2d37c7cfef7b4be9886e0dae8f08fba6fa96fa4870c40d98ae06c3019. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/GBXUX0870206.
St. Fulbert "Ye Choirs of New Jerusalem"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0e09e4f736a4d95f33545925131972c9818805b063e5355c02e452d3663ef9. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/GBXUX0870212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde92f02789ff80706c277a1bd45fb48cd47b98b5236db2b4beaa068828fd0967. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GBXUX0870213.
St Clement "The Day Thou Gavest, Lord, Is Ended"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c50430b1ae554a56fb4cc6362d973fbede1522eb7d63bd30c62eadffee8c97. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBXUX0870214.
Kent "Father, in Whom Thy Saints Are One"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cacb248d1c3345f9c57006e69430d979b4c10535cd799ed51fbffdb6cfb271a. 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/GBXUX0870216.
Gerard "Father of Mercy, God of Consolation"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0661be8264b860656bb82caabfef62fcdf93bb2c7f35bbd9ed999649397cac0. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/GBXUX0870217.
Gelobt sei Gott "Christ Is the King, O Friends Rejoice!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1197d00b45df2c21197ac2b4dd0af4766d1d7b8aad58f8483b607af9f382cd. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBXUX0870223.
Rejoice, the Lord Is King, HWV 286 (Arr. for Choir & Organ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb273667f1ea3169bf6d051cf48ad6e9cc7d1c193bec5912820dc4cad67db95e. 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/GBXUX0870225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081e19cd9a703103a3ef5255846fc036839a31edca8941ee6d8dd41a81311013. 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/GBXUX0858604.
Elijah, Op. 70, MWV A 25, Pt. 2: No. 28, Lift Thine Eyes
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2873b81c13446d48d4cb05a32d450254ba74b6ba88b0b91a862e4a95e7c94957. 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/GBXUX0858611.
Lift Up Your Heads, O Ye Gates, Op. 44 No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0788bc5781964e70d748dc84da5b07ff6d11164e891f9882ba84ff450d6bbef7. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBXUX0858601.