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 0x7bccd28582d59f77a843ff4f19d8c0faf98cb4bae0fa77cfb41064d4b2c305e3. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e65a16b5-c729-4e3a-a063-19a5b0ff16bd.json and https://artists.proofprofile.net/proofs/artist/e65a16b5-c729-4e3a-a063-19a5b0ff16bd.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Milestones of Jazz Legends: More Blue Notes, Vol. 5
Wee-Jay - 2008 Digital Remaster/Rudy Van Gelder Edition
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 0x4cb2e5d2e4b3897f1432f82a5af461c79f46abf3bb3bcdda8f7b81f815549c89. 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/USBN20800425 — a six-check JSON result.
The Third - 2008 Digital Remaster/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb703e5d41d11da25392867ba48392e1089b4a0563e6d9fe2f25f0a103d8c525e. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USBN20800426 — a six-check JSON result.
Bobbie Pin - 2008 Digital Remaster/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae41d20212fe290fdfe722d22da5e19fa3de38079fb0ffef5e75f57a082722a5. Chain 2 (Bitcoin): anchored in block 960230 (2026-07-30T08:32:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBN20800427 — a six-check JSON result.
Marc V - 2008 Digital Remaster/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9935d968805edd4ee32b8a605b2a7e736d2df645b0e631d561786f8715316460. 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/USBN20800428 — a six-check JSON result.
Ka-Link - 2008 Digital Remaster/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b1ae4c1904254b48ae128e1df37b99f799d728593502bb8d9704ecdced17172. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USBN20800429 — a six-check JSON result.
Beauteous - 2008 Digital Remaster/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8008058ca106cafda433ae850e90628a19d0025b1d0eb6fbd0cace8d5820b3a. 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/USBN20800430 — a six-check JSON result.
Wee-Jay - Alternate Take/2008 Digital Remaster/Rudy Van Gelder Edition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x397ed597f53e95d1ce3b150147689c0f6e0ccb039eb2d4947669291be70db8c5. 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/USBN20800431 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a216f797d48cbfee614279102befd45271ebef899ca6b00a8231f3c3c772bce. 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/QM6N21797222 — a six-check JSON result.
The Greatest Jazz Albums of 1956, Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c81e5e798ee992fbf88af40586f6006917c99537a216415163f0811c48636e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU241804754 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e16b1c24a4ecaa4716e3779a8abcb20596bf199369691f35ffb96c6abd42a4c. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEU241109333 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4494151f6f76a1055571a44b99fdd044d325334fc2e8688b6b631e69762bee98. 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/DEU241109334 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb02f4583fde7c9f4b096d39665691d324a3733bff23d685c759f0dd60c344ae1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEU240819870 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447c1c9ce957c9313e655dcba921ca3826e62f19e98070cdd1421368265e55db. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/DEU240819873 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6d18f35486f52fb9d404241b617748d88c09593534f8976fb3fd44d7465288. 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/DEU240819872 — a six-check JSON result.
Honi Gordon Sings / Introducing Sue Childs
Tenor Sax - Four Classic Albums (J.R. Monterose / The Chase Is On / The Texas Twister / Hootin’ ‘N Tootin’) (Digitally Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x443a78c7b02479fdad47533f0504759e2278d903224d347d239dc07647383de7. 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/USFI86000915 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9ca2533ef7959225cda4d9a58c12a00cd5a6a32f5e6f6cce792f4ffb326e9b. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/USFI86000916 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b181f0b7c6946bfd0df94f6c9ba5253ce3baaa416beb053155d8fdeba788b57. 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/USFI86000918 — a six-check JSON result.