Mohamed Camara, known professionally as MCVertt (; born June 18, 2003), is an American record producer and songwriter from Newark, New Jersey. He is best known for his production on Lil Uzi Vert's 202
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 0xdec0a87b85d0e9acf17c026dd3a081c453e98e4b241d5de853756c458f3e680e. 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/3f57b7db-d671-4d76-9d07-dd3b4e1f0839.json and https://artists.proofprofile.net/proofs/artist/3f57b7db-d671-4d76-9d07-dd3b4e1f0839.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 0x88a63f06955428633061454ffec8c4810372dd51d247a079794c3c7145296922. 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/USWB12303919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a18ca680a11c696077dfbf24d439ff8c6495950fa93be4ea488bec3e703eba. 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/USWB12303920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf521db6d590ff66d1abcfa7917f6ff9d7ceae7e76b198f7c33d7eac2116ef1cf. 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/USWB12303921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf866245a3041804ccb5ff6e382e99b0d733c867d3291cd83b3b161ace6fff9fe. 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/NL8RL2317792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88a63f06955428633061454ffec8c4810372dd51d247a079794c3c7145296922. 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/USWB12303919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x218f99359a09df13df5aa287de2f4e01c5d5875646e78597de00383e984f69a1. 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/USWB12302728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb11fa7cdea7fd734f055c5fb1357555f5b9cbcca27b1c0f32abc413fc42e114d. 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/USWB12300978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc468c0e26b1a3fb6733344a46c5394f6b73b2c89cf127bcc381b9c949a3e5ddd. 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/USWB12302713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e5f49faa99b9af81f6ebdc6d336898f2423edfe0df1252227bbbbfce9e33a3. 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/USWB12302716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde0ca8c3dc8ae4c62f95f47b49cb2313d5e4ada681752cee23231d8180e15f0. 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/USWB12302350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ebae1e887ad33a233d8c69785fe92e0e9b38481f6093f1cd4d0fae1b941fba. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USWB12302725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10576da646a83bf23c0bd6ac66ac79a977c3a2ab13b52172fb20ba992c9bad40. 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/USWB12302727.