{"copyright_id":"0x5fef8a9d4229d9735c7c860398e6c4ce54d1a67b1d7df6cc81a721788c5e1327","name":"Cambridge University Symphony Chorus","registered_at":"2026-06-16T23:09:26Z","symbol":"NIM1204999","token_address":"0x4f4fcdbfa33a9f77c82e2722e2aa2df6d9c87c78","type":"artist","uuid":"607e15ec-5d4c-46a9-9fc6-0bc029efa6aa"}
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 0x5fef8a9d4229d9735c7c860398e6c4ce54d1a67b1d7df6cc81a721788c5e1327. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/607e15ec-5d4c-46a9-9fc6-0bc029efa6aa.json and https://artists.proofprofile.net/proofs/artist/607e15ec-5d4c-46a9-9fc6-0bc029efa6aa.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Dream of Gerontius, Op. 38, Pt. 1: No. 3, Rouse Thee, My Fainting Soul
Alumni of the Choir of Clare College Cambridge
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 0x32c385df929e6b6958a7502d098ce76f018cb0502df7eb71fabe33a303c0a089. 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/FINDE2400153.
The Dream of Gerontius, Op. 38, Pt. 1: No. 5, Proficiscere, anima Christiana
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfc4d7b44ca25f56b2aadc1ab8f936bde517a87087bde5c8cb4911960cb24a4. 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/FINDE2400156.
The Dream of Gerontius, Op. 38, Pt. 2: No. 8, But Hark! Upon My Sense Comes a Fierce Hubbub
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d351e878e933bee12f7de8369bbeba80f55ff207270c18dcff289f670ce9e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FINDE2400159.
The Dream of Gerontius, Op. 38, Pt. 2: No. 12, Lord, Thou Hast Been Our Refuge - No. 13, Softly and Gently, Dearly-Ransomed Soul
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac4ac3496a8d1654f71bfab7ce46a11f7533a87fbc7a64474b6648c008a752b7. 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/FINDE2400165.
The Dream of Gerontius, Op. 38, Pt. 1: No. 2, Jesu, Maria - I Am Near to Death
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e25a6565f2caee560fd8dd962531cff436eeac7f686834f55eebabd6096bff5. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/FINDE2400152.
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
The Dream of Gerontius, Op. 38, Pt. 1: No. 4b, Rescue Him, O Lord
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4113cdf81fd2b7915477402e18a52ef358869a68ca10098a75f916f6071a0fd. 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/FINDE2400155.
The Dream of Gerontius, Op. 38, Pt. 2: No. 9b, Praise to the Holiest - No. 10, But Hark! A Grand Mysterious Harmony
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421396e17d6685cc69a5ef241ff3a93a95917712b1868ee9f7bc400174941f03. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/FINDE2400161.
The Dream of Gerontius, Op. 38, Pt. 2: No. 12, I Go Before My Judge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2abde85415cd23afc784b6995fb5d2ded21d9fe19cf6d1865da4272e7b323f2. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/FINDE2400164.