Daniel "Boom" Desjardins (born 1971) is a French Canadian singer from Val-d'Or, Quebec. He was an original member of the rock band La Chicane for eleven years, from 1993 until 2004, when he left to be
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 0x5614c0ff7909a7e1814bbadc02b3ea5bb48064d392d9f931cfdddee5da77299f. 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/654a31cf-5987-46e2-9e39-f8b5080126eb.json and https://artists.proofprofile.net/proofs/artist/654a31cf-5987-46e2-9e39-f8b5080126eb.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 0x003ab9310b8a3079a81484a28aae6ca550e1321046aaf0425cc0d9c27acaf934. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/CAU110415314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0492894ad977d891f6b861d95ac61f824c5c287ccd34dbe9810b7ed746bcfeea. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAU110415316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3394807c39540ea1569f7822ca8514732de56e1c7b1cc4eebaecf5df6046ae1a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/CAU110415319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4895311be0d34d7611165d2ee0768f2d16cd04136404aa39f84e3723e142d7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/CAA4R1136023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdaba014fcb9499bb0473d7c79d71c3ffd36f0037d85138eb133d09573f1a3a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CAA4R1136027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3332cd384baf63d68d2fad244235439db4bba69ca5dc6fc3cdce897fae389f50. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/CAA4R1610014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8d2239265d01fa1f9844b765496dbd65e3590cc3b45f16f5ec52e09b2b65bc. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAA4R1610015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf84bbed9c1bdb677d1c92df9baaa21a82f545c0c38c389ae0ddb7bc4c9445eb2. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CAA4R1610018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8e8f19e960203814075ae93da8afad201662c5a05bfc20deca2f4737ee64ba. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/CAA4R1610019.
Le Temps D'une Chanson... Le Temps De Dire Je T'aime
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e2e19a8cf10b5a2e75c55df84f8d3588ab72d04675de460c48ac322e47de02. 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/CAE800500008.
Serge Fiori: Un musicien parmi tant d'autres
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167a7b792a37145621ccd845001d8df5677d26e12083804ba0c40db788e4d4e1. 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/CAZ520620105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7cfc08f1655ac6b61c13de568d4f3f228543f2c634b9d833b5f6275b206ce8. 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/CAZ700805956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4124ab142dba424675b3dc576d821a8aca983b8c0fc1d5b39255f80af276c62f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CAU111020469.