Geoffroy Mussard (; born 11 March 1966), known by his stage name Shurik'n, is a French rapper from Marseille. He is one of the members of the hip hop group IAM, as well as a major solo artist. With hi
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 0xb376bdbbecb5a9c0bb7b13f81e4e89cf03b4a506e3b8a6e8ab5e8e2b0ca56932. 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/6f1e57a5-21af-4096-8d2f-bb4d4d6548d9.json and https://artists.proofprofile.net/proofs/artist/6f1e57a5-21af-4096-8d2f-bb4d4d6548d9.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 0x95a45827ff90c04b0f4230bead4ae6e51feb9d3c9fbc86409917680cc1a80fd2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRY689802670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddeac9d3bb7438ec3519d56cdfc5b99e911216fadf2286f645819b84043e94e8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FRY689802740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd186043b57425d283f000f654459570ffe5d130b2b0464551b51379a083801. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/FRY689802760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db75d86a46c46ed0c11f3305fe7df2ba0853caf063b6e796f6571318d771ef8. 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/FR9W11200398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe944d0344c8efa4c08aece6b531183bd50f603d8208d7c05fb83e8a086fe1d46. 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/FR9W11200406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7fc68b3e4e7a868831743bcf6e3a02070439c11cafc058ddafdc97a1e4719. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W11200400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafec374c9898b18582a4ed69d3cfca7f1fa2271c2900a24271828eb1d0f3e78c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W11200687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe670dde1c671d7f6fe97d9e684aa82fc76868cdc7197ef7628a079ccb8d560. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR9W11200397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b283883dcce5f956949d910a901e7ef04e3fe9d874f1fa3279d97d3ad01e02. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FR9W11200395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x146ca2d1b08943775276080b7280064c1da2d4ff92d0648e4b7f59fa24bca349. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/FR9W11200403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bdae01b94b053d286ce0e029ef4ddd84575f83b98c99b6bdcfc1f87ff28676. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/FR0U91601403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7008ab9bb95a1d4c1bbd1e032312dfcf1436775e98c942a997e306c88d846e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR0U91601404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4065df7803756986d5adf22dd2cf4c170426fd78399f4de994d9bbceba1ccae. 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/FR0U91601405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd201c43deb0a4f93f970a846cc07d0a2698f4277c51b77df598af7ca544e5b1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR0U91601345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd495d99ca8d0b6530a95d7d3a3785f51dc5f34ea30311a348a0aa19c40e2e8bf. 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/FR0U91601406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c31471ac7458e07d1b3ff0bfa884c59db3d42c6091bc1a738aaa2cf783371d. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/FR0U91601408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bc093b976a844e1d4bce847d1dfeb49df6562c06ad119c28477380c837c680. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR0U91601409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420a1e226efd82fe12611acdd3511f0dacc767089d33dc7de0ab3be3d047c329. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/FRY689802660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e82725a7327af3f3cc0f472e09e36f41ef306afb627eee97a673849bf1190f. 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/FR94K9900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a047abeef6752708f99b73e48fafac980fee023c9d57872983e002b516e86b. 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/DEE869900363.
Bad Boys de Marseille, Pt. 2 (feat. Shurik'n)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f6f212c27ae58482e8388bc918eda6ce7a5d58a808eb5138d7bff6ce25ba97. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRY689610004.
Classics radio spécial rap français, Vol. 1 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc813cbbfbe8438092950b079688bb1cb52a4e0c95945cb66d2d8428256b3923e. 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/FR8GV1922780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f1d8d9fcf3fa9162a7bc3740e418d63c3020c886461ff0712e98040fd405b4. 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/FR8Y72300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1987b2917641f700aa249740ba1ed1e3abbfbd0e005086b318d84433a11a532d. 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/FR0U91202927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bd3ef9d2678521a76ceabf77a10434d5b45f0c510502983cf5ed18ce2ddc7a6. 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/CHUM71900126.
Ma 6-t va crack-er (Bande originale du film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bbab98e91bf0498fa2ff9d1599626d8e37173ea89b67c4b891b692ab6dc571. 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/FRW889700008.
Ma 6-t va crack-er (Edition spéciale 10 ans)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86bbab98e91bf0498fa2ff9d1599626d8e37173ea89b67c4b891b692ab6dc571. 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/FRW889700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7ad971ce7b7418f8d6909059b3589c2947e41a9c0e28171454b5767953ca76. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR6V80258147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5f1087c11a32846f8c9093b57d7ed8480618677dd85f6e9ae4eb181060f4ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US3DF2566442.