Hakim Sid (born 2 July 1975), better known by his stage name Demon One, is a French rapper of Algerian origin. Life and Career Hakim Sid, born in Choisy-le-Roi, Val-de-Marne of an Algerian father 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08e8b1cc8cd8c149b79226110c90bf6465fa9564d30e6122b355e8b8d1e9605. 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/dafa5cbc-4831-422a-834d-c37986f0fb67.json and https://artists.proofprofile.net/proofs/artist/dafa5cbc-4831-422a-834d-c37986f0fb67.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 0x69719f56af25c1f0b098ef23843ecfddde3f77ebebf63418e62ef309729879b0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FRZ110701907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb85948e283718e825cb838448390dd5ebad6e01746fbac0629dd933c1704330. 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/FRZ110701905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4d8ac5ed9985f5876246a19f1c8ef082fd47d38f7846cd6e92c686194d5a54. 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/FRZ110702075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188b6f46c55642d629c5f6edede49130f7835103d898e1391da85a536d1a9a79. 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/FRZ110702070.
Le gros (feat. Tirgo, Ringston Lnk, Alex Crocoh)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6b40f89d1b4b65bc32d2f5d65298c505c5334ec3dafa51b12f0d15f4e01f4e. 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/FR1MP2001120.
Les raisons de la colère (feat. Demon One, Wilox & Dinka)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b40a972ed311ac8742ee7c2e024b02ae3bdd046118c5ccae106360a92f9747. 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/FR7U60900120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ab53893bbd7d04f911a6435f05f920d23db95f52732eefc429e12a478e03f6. 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/PLA380588034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc4e54202ea597c81fb322de355902cc7f9d94f609f5ee05449f7d6a6a25259. 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/FR10S2535245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb724adfa142f958f61a24e273de991e081de1ff7c9700889edbd047a85e5c89b. 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/FRX762125258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28447c269e81e71566864f70139527039d4d10e522eb211491ae55e3e7c37178. 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/FRX202205390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a6a813b9ad620597417d16ad45036802dc99fe41e9292056f0a11619e19a35. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRX202205417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59953ea7be45c6a6431ba4259605f819edcbc98549ea6313fa61b9453d0da8e4. 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/GBGYQ0700728.
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 0x45cee4676b72fc117341137e38e4c3e32f8fe14f58f386d165c777a094f8f6e9. 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/GBGYQ0700701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889002219d80fde94111ccf4aa9854e41acc258de30cc47adef44d1d46775c22. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/FRX202205408.