Wilbur James "Jimmy" Cobb (January 20, 1929May 24, 2020) was an American jazz drummer. He was part of Miles Davis's First Great Sextet. He was awarded an NEA Jazz Masters Fellowship in 2009. Early li
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 0x653768af352de643651499d4d0c7cdcceae30adbe49d09e9913642b048e4ed3b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa0c967f-0425-4853-9c0b-00b3804e21ac.json and https://artists.proofprofile.net/proofs/artist/aa0c967f-0425-4853-9c0b-00b3804e21ac.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0xb5fcc1d30850459533de68e58f1f3148bd9a6b6a658eacffd65976e97cbdf98a. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/US99C2045901.
Someday My Prince Will Come (feat. John Coltrane, Hank Mobley, Wynton Kelly, Paul Chambers & Jimmy Cobb)
Music From and Inspired by The Film Birth Of The Cool
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x502e8387b5f3de28247fe9f6ac54dd39c24d39bf7939eb3dfcbff11474cb02e9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USSM16101199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812da3b9ebab4a93c32d0e0b2cd34a01c3d98c8d551ee65944b44cc58df7a667. 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/US99C0531311.
Ah-Leu-Cha (feat. John Coltrane, Bill Evans, Cannonball Adderley, Paul Chambers & Jimmy Cobb) - Live at the Newport Jazz Festival, Newport, RI - July 1958
Miles Davis at Newport: 1955-1975: The Bootleg Series, Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81529d14d9eb45a03e515b1f5db0ddb1bcf7bce40f313e9cdd859dcbded99a4b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USSM10016691.