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 0x80993800e2e5794ba2db369780a8ac161febe4b52b4d882a99beb02a1aa71ec4. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f3da620a-cc92-41d1-b47f-a379e8c173bd.json and https://artists.proofprofile.net/proofs/artist/f3da620a-cc92-41d1-b47f-a379e8c173bd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Introducing The World Of American Jewish Music
Dave Brubeck: To Hope! A Celebration (Live at the Washington National Cathedral, Washington, D.C. / June 12, 1995)
To Hope! A Celebration: I. Processional - Live at the Washington National Cathedral, Washington, D.C. / June 12, 1995
Duke Ellington School of the Arts Show Choir
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 0x2247b232de73d6ffd3abf060a10f3985ca725a46d5834d4c152d8cab3eb0920b. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10301430 — a six-check JSON result.
To Hope! A Celebration: IV. The Peace of Jerusalem - Live at the Washington National Cathedral, Washington, D.C. / June 12, 1995
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdffd4aa527986dc285acc2864426421d992bafa9334a49ca89d72f0841f24aae. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10304430 — a six-check JSON result.
To Hope! A Celebration: XIV. All My Hope - Live at the Washington National Cathedral, Washington, D.C. / June 12, 1995
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ed0d1bf8edbcc2931bc4012ac421080d37f9e703623dc5d32ff6605ea2680c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USTE10314430 — a six-check JSON result.
Brubeck: The Commandments - The Gates of Justice - Gottlieb: Palmistry (excerpts)
Concerto for two Pianos (Harpsichords) and Orchestra in C Minor, BWV 1060: I. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc090b16ef9d59486b05a7a88d119fb63b37b97964998d6f94ab479797358825f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700534 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71882505db6b928f4efd444eb27389c266b0e80a3484b7a13e1284c8b2a6579b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700546 — a six-check JSON result.
Concerto for two Pianos (Harpsichords) and Orchestra in C Minor, BWV 1060: II. Adagio - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7ddc82e1f5021655fc99245cf786e647fcf9cf98a8925f4abb23c4003bb389. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700535 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c4652cc2a6f90874464650329402736e3dbd785d59d7ea6c54167201ac378f. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700547 — a six-check JSON result.
Concerto for two Pianos (Harpsichords) and Orchestra in C Minor, BWV 1060: III. Allegro - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d86b89a2dacee7ec328ed91ce1a5d3c0e79955117af69e78ba0254631d681d1. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700536 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914d41de882148eced4233536a2918bd088bce5867c36ed749eb68dea3fbb995. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700548 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: I. Prelude - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639a65f6c35a15fc4414d835f8a8e78f74fe6a7a6dd70f8e4797b0cccfda6aa0. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700538 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bf815c319270a126d1a83285a3cd1e13b76c754c21964f89fee09c4abcc8f71. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700549 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: II. Scherzo - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6807b3f12627d17856ffe58c6f2fdf80a35de549e9ea650d098895bfe078f2fb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700539 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: III. Blues - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5a330fce1f08e4c45594e60a21f387cde1817a4e19a3a73f4477ac3c8546e1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700540 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae730fc5321a2f7b52773ef4fece008145f53de9d0599d355d9a91570d6f67b. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700551 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: IV. Fugue - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdfb01c61a06d143163f54afeaa36fcd932f88511b32779e5270f4f152eee13. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700541 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaec539f4eac1a8777297074d342cc407643f8e4a92178eff0bc2047be672e0e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700552 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: V. Rag - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70a8690cb444c6381e0dbda26d197ea6105039a29e31526ee133c4592311ffc. Chain 2 (Bitcoin): anchored in block 960311 (2026-07-30T20:45:02Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700542 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: Vi. Chorale - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5074bb70ffdfc18e48c67724d719f1da6c30db96ea7753b88e795b3ef83aea8. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700543 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: VII. Waltz - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494f0b4a40c5170948d74a308264e2dee2ce658801057ba27908a66aa76b7e7b. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700544 — a six-check JSON result.
Points on Jazz for two Pianos and Chamber Orchestra: VIII. A la Turk - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ff8ee271a37d4e86597f2b43f3953fc4ccfe28dbdff3b43f87f2152519f16ab. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE860700545 — a six-check JSON result.