François Boland (6 November 1929 – 12 August 2005) was a classically trained Belgian jazz composer and pianist. He first gained notice in 1949 and worked with Belgian jazz greats like Bobby Jaspar, a
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 0xf40e66b4f1f3269d4ef4ef9d90f9d8f0c96d74cde0892cb3862963a81af3d40e. 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/f41d67b2-a48d-4b29-9e2c-f98d9ee647a5.json and https://artists.proofprofile.net/proofs/artist/f41d67b2-a48d-4b29-9e2c-f98d9ee647a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kpm International: Jazz Convention Volume III
Kpm International: Jazz Convention Volume II
Kpm International: Jazz Convention Volume I
Playing With the Trio (feat. Kenny Clarke, Jimmy Woode)
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 0xc338ed90707536d2badf9c516b3a554156e37e9f41db8941d9173d81a214d57f. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/ITO0P9800616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf321c84880f16e0f66905db1e33622a6e6136e1a5c383de64a935203069fc. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/ITO0P9800619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8c567fbcbc2fbd2dc2b2d8566fbe1f1baea98e5651849c4cbada5a8dbb2775. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITO0P9800620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a62dd8b15cda4cf84b0ac15221e6af52cb6c895799277ba0669248f8319981a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO0P9800626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d7afbc7b2d0ce3bb5f2484e1b8d9b54ecfb02d120e8aea387342b9f42c0030. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ITO0P9800627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb81ab874b0c617017510570074cf957876a8801cf81821b182ccfeb52cbf5. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITO0P9800630.