Crampe en masse is a Québécois comedy duo composed of Mathieu Gratton and Ghyslain Dufresne, who were active from 1998 to 2005. Their first album sold 30,000 copies, while their second sold more than
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40131cbaad2bd396ed4ae1e3425b5f1696e8c55b610bb03d26a3ca07882328cc. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b9094718-87d3-4a90-9529-3d331384dcce.json and https://artists.proofprofile.net/proofs/artist/b9094718-87d3-4a90-9529-3d331384dcce.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d8335ef2b1a6e17d905cbde96e0e6c2762264e056f3e50576f2e4f8856b911. 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/CAZ700702193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c58030e591f955af0a81d0c6342d8c423bf0155cf548296ee35e2b2964781. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:10:43Z), 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/CAZ700702203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d5f94cabe58723b8a54cf3c0abc806ae2d00f5ec1ee0d326d621901df4fd1b. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/CAZ700800966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52844f7186d722950ffeb75d2cc457e779cab1754b30bc4da8933476e82ec8ef. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CAZ700800972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdd2a313d94c49a969b8195e02e573b40992815d36e7fcd529a10f6371e1776. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/CAZ700800976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe338142eb08e0050486b65075d4f2fa0069a62b6cff3e1b58c7df211201687bd. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:36:20Z), 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/CAZ700702345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e1245bc57b847927ffc6c1b175294912ec5d1678dbc87098cbb3ef780c1be26. 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/CAZ700702355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd336545eee96203e4c9c3cd6fe3f1f14b132abf34237f4141408f7463106f0. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:03:58Z), 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/CAZ700702386.
Pute, pute , pute St-Hubert B.B.Q. - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6624c94a9794860f7bff4d3af3fb12f32161a5358480b1c37b58590fa49d37d4. 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/CAZ700702393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9bbc413fb66adb757976b208b20626943d64cec28a900039102807451324622. 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/CAZ700702394.