Karim Zenoud (; , born 19 April 1985), better known by his stage name Lacrim (,French Montana's pronunciation of Lacrim that can be heard on the track A.W.A. ; sometimes stylized as LaCrim), is an Alg
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 0x5e21b6d078fa7e745e5015e1c15f7001bec21e034839b76181f79a713cc26bf5. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7d86a03-ba6a-42ac-8807-707bb87a44e4.json and https://artists.proofprofile.net/proofs/artist/f7d86a03-ba6a-42ac-8807-707bb87a44e4.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 0x32b872ab7915964ee43514f5fc08a2a8e145f2edc69e457c76d729689c6bbb73. 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/FRS182164042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb308eac7b46cfff87faa96357ea7e405b1f7766fabea49bbe6126d3f206f5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRPZ92420190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0da7a87e0c702a20097c1159abb9f165db5655607a2349edefbed0c0c6a76fec. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA0Q2471130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92635aa7b210a4484470f07bde39cc8a080846139cacdacfd48c8bcde62061a9. 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/FRX452031807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2436428632be353ef3e715f897cbeb7f652f1425a68b3889b4c62eb7af79fba3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR9W11516221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72cf798c7511d1b5c419f24d2465cb8878fe3eb7130152bbb70a26c3eda2ce2c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12418275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1070376081fa824c176cc1a535a700bd8a4eb038f3ba0659d1312a8050dc8b5d. 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/FRZ042000769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x425370676163ae57a2ca656c3e12ab18127abffcf30e28a2c486a9606c8e3c58. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CH7812363413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f5f79007204683f5d72a57af21d75ce2e3b9854377459f9c1a4624833a76ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRUM71401653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2eb308eac7b46cfff87faa96357ea7e405b1f7766fabea49bbe6126d3f206f5. 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/FRPZ92420190.
Not My Dons (feat. Fredo, Lacrim & 3Robi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4806930f6b7a093f3b96bd381a9dd3c767d10a207307f1d790e517441284cc. 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/UKS2R1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f89c3539be7f18f6d8aa14ac3d864da1f4cc296ea05742c4ae4a459e4f533e. 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/FRX872460482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f89c3539be7f18f6d8aa14ac3d864da1f4cc296ea05742c4ae4a459e4f533e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX872460482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f89c3539be7f18f6d8aa14ac3d864da1f4cc296ea05742c4ae4a459e4f533e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX872460482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6a888cd54c06c12fcdcae57d85df19a70328ffa8e2e1b63921aeb90fdbcec86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX762125234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45731a5da4bea04b16eeabed95cb563eb3cafcea016638b3fc62842c964283d5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/FR0U91400515.
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 0xaaa1d00e15b06ffc4d054aeaddcbce1a8f32fa57a477f1e3dbafc93f659e43ca. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/GBMA22097454.