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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bbef5a6355fac93e5913c5a21dff4611dc888552e102a9ffd11ba03b954227. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b050474a-a3c1-4eb6-9da8-1b4a178ac358.json and https://artists.proofprofile.net/proofs/artist/b050474a-a3c1-4eb6-9da8-1b4a178ac358.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Great Orchestral Transcriptions for Band
Carnival, Op. 92, B. 169 (arr. H. Clarke for wind ensemble)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2d2f05127c4a8b2337904323a9999c0c93498bff757ca6dc1199005e6567377. 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/USA5R1398506.
La forza del destino (arr. M.L. Lake for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3926522db16e3a6b02eef78dec290c550eed6dbcb6220214f029f7d23946da. 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/USA5R1430307.
Candide: Overture (arr. C. Grundman for wind ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3b9a0be21d72d282ac22c6994670c5893d7429507bb75b5a0f5393fc928934a. 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/USA5R1430322.
United States Air Force Reserve Pipe Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ca92adbb2e342bfbda5ccd20921b766e76179e4129b71e3052f460b7c77330. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/USA5R1430845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x478e3443406d1df327f5e7f36eee962e608dd9e8f8042acfbe3a420f961a9fee. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USA5R1530926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8b06f33430189f469cd001d49a30dea08afebe27c92ff376d92db8ad051632b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USA5R1530950.
The Heritage of John Philip Sousa, Vol. 9
The Heritage of John Philip Sousa, Vol. 8
The Heritage of John Philip Sousa, Vol. 7
The Heritage of John Philip Sousa, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da9523b814165308b1ec5b70f0f68c5c7d2d71c6496921f4234ec8c0a4c128c. 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/USA5R1000512.
The Heritage of John Philip Sousa, Vol. 5
The Heritage of John Philip Sousa, Vol. 4
The Heritage of John Philip Sousa, Vol. 3
The Heritage of John Philip Sousa, Vol. 2
The Heritage of John Philip Sousa, Vol. 1
The United States Air Force Singing Sergeants
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6af2959a258ca725a4d1c213820e0586238238ab32d7c153a8f02b5c9f2eece. 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/USA5R1550206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd790a301e78e50ca78636564ff622027b87b5dc520e59215295311234e844550. 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/USA5R1550219.
The Bicentennial Collection, Vol. 6: Jack T. Kline and John R. Bourgeois