Didier François (born in Brussels on 2 April 1969) is a Belgian musician specialized in nyckelharpa and a sculptor living in Mechelen in Belgium. Studies From 1992 to 1999 François studied violin w
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 0x6d6d84f21850243a1aa51a113736086cd33bb50bdde9d918c9ce8ee0f853bbec. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31bce351-752b-4747-8ea0-0a909481a71f.json and https://artists.proofprofile.net/proofs/artist/31bce351-752b-4747-8ea0-0a909481a71f.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 0x98800f207c3f2ba4dffcc56aae1abfdd742df7786a208fb3795aa2822b942ed1. 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/BED762201001.
Brudlat efter Simon Svenson & Härjedalsschottis
Lachrimae, Rism A/I: D 3485: NO. 1. Lachrimae Antiquae (Arr. for Piano, Viola d’amore a chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c6a8869be839cde43c2fa6fb74bba8622f5830ec2ceff96f2308e4996713f7. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/BED762205010.
Goldberg Variations, BWV 988: NO. 1. Aria (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a8bd3437491ed89677db886ae310bcce606292282027e110c9722408032f73d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BED762205002.
Prelude and Fugue, BWV 846: NO. 1. Praeludium (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220371c9c2852544c54fcd5dfd8ac4ffc24ebc5b790a2dd6338ce0150a099806. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/BED762300003.
Theodora, Act II, HWV 68: NO. 36. with Darkness Deep (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa8c0e91680e789f388933c43fc79a380d6b4740ffd83d67cedb559ee2d59f7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BED762205004.
Que ne suis-je la fougere (Arr. for Piano, Viola d’amore a chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14984a8232670f573ade7377dbbf772dffbb774f624c1ea2cc2fd5fd3179bbf4. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/BED762205005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5baf4d6a4dda9d3e2141741d309ced031404338ad24e0f365e32cdadd5265c4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BED761808001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2017cf8b7ec59d7439fbd286c29d67b521ad3761c77b36f98c8bef98cf0d7a97. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BED761808002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20cf210d3ab3e1bd9d9219b0b7856a7ecc01be75bb908488766b3c4ff1c76ae. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BED761808003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c766585ca896af9e63a30faa2021db198e5e049ef1944d59dcb4e1271980f52. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BED762502301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896f8ee0bc2f9c191025c352ea2771b87d799b8a3d19ddff361bc1a86495740f. 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/BED762500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b55a251ea53d30ed42bc58488783d53125b1fe88f33cb245cb11487103cda6f. 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/BED762412001.
Handel: Theodora, Act II, HWV 68: NO. 36. with Darkness Deep (Arr. for Piano, Viola d’Amore a Chiavi & Drums by Michel Bisceglia & Didier François)
Dowland: Lachrimae, Rism A/I: D 3485: NO. 1. Lachrimae Antiquae (Arr. for Piano, Viola d’amore a chiavi & Drums by Michel Bisceglia & Didier François)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0991eb2aeb8dc5fecaa8e3f62d59725378bfca60fec536050f8bccf66d282618. 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/BEW631514001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee3ea6cdee3d18ce124ac7514cfb10da61e48284b4167409f867cf19c3a33189. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEW631514015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c3ac1ba7dc347847b00f5e7e862b691dd6f77ee860ba11268dfe33291de94a0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BED761807303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc02a0b8d40419ba0814bcb1c67bb41f0e77953a2026663dc182623f29f7be7a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BED761807306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30394855f0587c2afb12ce3f7f7b0af878928772c11aa9bd3e7d4897a72c281c. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEW630703312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42b6bb33f5c72afd09a3a59c6760da4e916bbfd2143d8a86256e530fcfe2437. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEW630703313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6836ec94ece83ab5836c5706591f7caa0a19d078a7059299a7deb1e802f56cae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BEW630703314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fc5dad015dfc0c46cfee6628d0dc58e45581b0fb6da6aeff56e33ed29953b8. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/BEW630703315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48f9f0f17a76215218ac536fdd4960173c8912cb186efea56a0751cb75ae144. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEW630703317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99a77d27a93bc6b36b8ecb2846070661ed2436629868a2ec6225ad6d52e116d. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEW630703319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x916c99ce8b6b2e2a9e771d33716adeb669280100d393b482cdc99537dcd4ccc1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEW630703320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc55e889f966c1e34bf265ef970b54faf9f0dfc652fc6b10608a623721bb65b93. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BED762505001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786b1326cabafdbaa1c41fd82d0ffb278faaf11c555ac030ada54b03e8bc8e5a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BED762503202.
Hommage Till En Spelman & Slängpolska Från Vrigstad
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c948ce7ef4b316af7f652350b00ae83a2bba8a03ccbe8d262d3a74697b61a1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BEB432300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d6ca08c8f04a8578b78c258e84296e6a0bf91244497def2f9b2a5ff8959e98. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/BED762503201.
Trollpolska efter Hans Börtas & Slängpolska från Barsebäck
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1914c77d31ff8e10a1414051f553474c751b5ad30c1e63fb2f3cf26c0ca3bde8. Chain 2 (Bitcoin): anchored in block 960167 (2026-07-29T23:42:34Z), 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/BEB432300107.
J.S. Bach: Partita No. 1, BWV 1002: III. Corrente (Arr. for Viola d’amore a chiavi by Didier François)
J.S. Bach: Partita No. 1, BWV 1002: II. Double (Arr. for Viola d’amore a chiavi by Didier François)
J.S. Bach: Partita No. 1, BWV 1002: I. Allemande (Arr. for Viola d'amore a chiavi by Didier François)
Springlek efter Lissmyr Erik Persson & Polska efter Zakarias Jansson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49e06b3488edcf898cc17da7ec4382ade6a03c285313dab2030796e7ba40bcd. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/ITDF91000104.