Mingus Big Band is a 14-piece ensemble, based in New York City, that specializes in the compositions of Charles Mingus. It was managed by his widow, Sue Mingus, along with Mingus Orchestra and Mingus
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 0x71734a72df62a7b1e28b34b3838fe75f02541e07506b9447a1add44a369f8d5e. 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/69db973f-419d-47a2-a4b0-30883b48582e.json and https://artists.proofprofile.net/proofs/artist/69db973f-419d-47a2-a4b0-30883b48582e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live At The Theatre Boulogne-Billancourt Paris Vol. 1
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 0x6b129b724110e7849dd9977ad9db2008714dc3774fc70a941fdf52b60323890f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FR14F9300430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05172b34de192badb850e736b1176efe11cee09b385556c79e48fecc051607d1. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR14F9300410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728f71eb06ddf8854ca3135020905aff3fc9b03b8cfd18072e480f26b98f7e97. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR14F9300400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef5713507c9825fc80bf8d06357e0448645b061d3fa0050645f5aa79cbb47ae. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/FR14F9300390.
Live At The Theatre Boulogne-Billancourt Paris Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f05f5dee1e17d6a8874dfb50804091c9a0a3ac35071766f3501286ac27571e. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/FR14F9402400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00dc573144b5e1b1eeba454cb38be0946eefda475aeb19dfffba85ef1e762b40. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR14F9402600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0079b1a47352aa76b3341e446a373970c126b7ba1703fba09ae2f0772124401. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR14F9402700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17e0230014a930f15c2cf903267e748ecfb626cf34c881776ab43d27004007e. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR14F9600220.
It Was a Lonely Day in Selma, Alabama - Freedom
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c530980a39ece05ad26bc991016ca08a49fb2cc0b50d72e616cc2740d99493. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR14F9900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1419e9970bea4536f09237a5418ba9f3e25a075527b247e5e063c9b7019fbce0. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR14F9900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6eb9842c67f458b4e15c64393bcd8946585764aaba7ea0196a01997542bf158. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FR14F9900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017e498005cbb29ca875b14320e60ff53c7f3664ba581d69e80901450a39b5b. 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/FR14F9900060.
The Charles Mingus Centennial Sessions Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9faf04cfc4ba25f176de619b1ea3399a01209e566f1e7efcf0d50ec480b378. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T01:47:42Z), 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/QMEU32022014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaadb9e6fd42a0f3a557d01092c6e05748d35d7dec8f469da31a7090606a7946. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMEU32022017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0597a86bb2b51067b4bc7ed3d57eef5af6e5a49817d605addda947a7af3b7339. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QMEU32022019.