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 0x3baceeb47d936075882b6a23ff5bb196f6fdbe555295df594182d87bd187b590. Chain 2 (Bitcoin): anchored in block 954618 (2026-06-20T23:05:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c78b6635-501f-474c-90ce-346bfe9b7f41.json and https://artists.proofprofile.net/proofs/artist/c78b6635-501f-474c-90ce-346bfe9b7f41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Te Deum, H. 118: I. Te Deum - Live at St. Alban's Cathedral, UK, 1981
The Choirboys of High Wycombe Parish Church
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 0x6b124be6f787c70a8ed48ae459a8ebcde2d22838b2db9c3ef0f22b4a4e5c8884. 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/DEF058104541.
Te Deum, H. 118: II. Tibi omnes - Live at St. Alban's Cathedral, UK, 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2462a15a223acc31caa6de3fa2d9a1b42f45f14938f8a1b634a8cc71dfa82b31. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DEF058104542.
Te Deum, H. 118: III. Dignare - Live at St. Alban's Cathedral, UK, 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe406cf3c0e37facadec54a6d9a5f771ed23fe4f01fe9d75884a6bc1dd394b539. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DEF058104543.
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
Te Deum, H. 118: IV. Christe, rex gloriae - Live at St. Alban's Cathedral, UK, 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd079685cde954328498284bc72af227afb3cae6cbf4dc08b14d2b79a97a6c8f5. 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/DEF058104544.
Te Deum, H. 118: V. Te ergo quaesumus - Live at St. Alban's Cathedral, UK, 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427ff73ba9b6ec2c6923228b4135774ff5b0434ab2e0d5a6c08ed0ad4f3a2d6c. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/DEF058104545.
Te Deum, H. 118: VI. Judex crederis - Live at St. Alban's Cathedral, UK, 1981
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafa8f6925546f2b818bea1863cd8773d721ecd37d0a666d53a7999ae40455edf. 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/DEF058104546.
Symphonie fantastique, Op. 14: 4. Marche au supplice. Allegretto non troppo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e8ebffc582618e7d6ca5a2b02a27157de5aff0a22d88aa32d7008a67388957. 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/DEF059305274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83323b091eb0cd88ad4376df7f3efff37511f9eac6d0cdfdb1b86a32f2b1153. 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/GBF079612580.