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 0xdf46aa61b999a0c4f4929292d266bd0c7cd552f145f85d3aacefbcde63e07023. Chain 2 (Bitcoin): anchored in block 953968 (2026-06-16T16:01:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2934526b-18e7-4cbf-89ea-dc2477348151.json and https://artists.proofprofile.net/proofs/artist/2934526b-18e7-4cbf-89ea-dc2477348151.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Street Scene, 6th Avenue, New York City, 1956....
Big Cat - 1/4, Sextet, Recorder – Moondog
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 0x5c3db7b6aeffc09ea589a01f0143828bf4d24d887e8fbea4add2f18ae6fdf1e1. 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/QM4TX1767398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98952925956a97f9ddf5a049feb2bccd811e78980581f1c6803977acbc04a46e. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/QM4TX1767394.
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
Lullaby - 3/4,Sextet, Vocals: Suzuko to Six Week Old June.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568d7d51d1368522e6c0032cf8816f0828a0763fe5bfc6ccb57e0f027164d648. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/QM4TX1767395.
Frog Bog - 5/4, Quintet, With the Weiner-Sabinsky Duo.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e627419411e2978685df232c146c498ae5badc59a8fbd926f9342529c2432b. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/QM4TX1767399.
To a Sea Horse - 5/4, Piano (Solo) – Moondog
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570384c1e09844a4b93f4bd234723751e405f42dceee9a84bef07bff3426c32c. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/QM4TX1767400.
Dance Rehearsal - 5/8. Naila Stages a Routine for Her Pupil, Violetta, Moondog Accompanies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c38dc720b8697ebcb628ac52bb02c4e7fee63bda8c5d73b58bf756afab0f3e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/QM4TX1767401.
Surf Session: Part 1, Part 2, Part 3. - 2/4, Quartet, With Weiner-Sabinsky Duo, In a Performance of Euphony No.11
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeefe00cd82d904f9f63c6213aaab40697c04416e305bdfeeac16ba40422709d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM4TX1767402.
Kaleidoscope (with The Trio & The Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c7b112d150b12be5e4100302287d2b95b10d437db0c20c728c8110cc5c1747. 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/USSM16501332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd9e4b68925482dd44922f7a8caca6e5aec22306f1977b13292045a4b1e62f4. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USSM16501336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dbbd0bd56cb04bb8efecfc741eb61e8c14c4ade2010974896efe2b8d09f09e. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/USSM16501339.
Love Letters (with The Trio & The Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289f77e118daf02fe46cfacb4209920be9b8dd35b0ce01060002b9d51707a358. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USSM16501333.
Straight, No Chaser (with The Trio & The Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ee3bae92fbc75dbdbfe87fd79705c1b631a63b2b5cf696e99377de36e9d5b3. 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/USSM16501334.
What's This (with The Trio & The Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83469d69351be886d78ec1d31ea3e6a52e1efd8fca42c7a2b325c02bf4ed9bf3. 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/USSM16501335.
Stella by Starlight (with The Trio & The Quintet)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe198f152fd54de5483b1a5d893fc9cc8c40efd3c81edb2d0aadd223a64c921c2. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USSM16501337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bda945bf4c223b128ba624393a9d8121255f1ce9f7f9049b0b9b36abf6f105. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USSM16501338.
West Side Story (Original 1958 Broadway Soundtrack)