Hugh Anthony Allison (born 1986), better known by his stage name Mr. Muthafuckin' eXquire (often censored as Mr. MFN eXquire or simply eXquire), is an American rapper. Born and raised in Brooklyn, he
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 0x2c782fea0d264034b63d2437779b378decfe8961201a821b3af65b19811b3e53. 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/2cc67081-d6c4-4120-8d4c-9b5cf650fb62.json and https://artists.proofprofile.net/proofs/artist/2cc67081-d6c4-4120-8d4c-9b5cf650fb62.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 0x4c2b7522944298c02f528fa60c5e36c2f650e01fec0436b8bab91142b7d73c42. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USHM21543544.
Bebop and Rocksteady (feat. Meyhem Lauren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa29b903760cc294fd2380b5576a78a4650035b0d93f23e77deb93f8dcfa2e079. 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/US92U1706392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f755c9649ce2c30b201dcb01fd34a6c4f5aa5d3de4a7e6e66c2887ed6986bb7. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/US92U1900632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c546301c5a7b3e1f7594c9069c82bbb47345892c5a0535e94b1c0b610c644d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US92U1900740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2846bcd89733136fdfa868bf9586741c5b5becc6db861fb57b106bcd7bcf3469. 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/US92U1906823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5654f398ca978f4dcdc8dbce84a2ea2416985d07e547cc64385fdf929a0f5e95. 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/US92U1906824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9593eee39135c7a9f7d7015b44891060bc33d9374228b7a3835fb378cb5c6779. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/FRIDO2512378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1008589313babef9fb7d870882e8e213a16b19f8f3d6acdfd70c11a9af1cead. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FRIDO2512381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4022b10738b29205e7a55deb14a3b5235afb772fe2fdf29e504bc8f3430ebf40. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/FRIDO2512382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435f63459f42cf3e8e6bd4cff0e9277bb45fc8b9f3138993825d8cc37a9202bd. 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/FRIDO2599913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eaf61f5371447dfe9294c3bae2fb27fa379a2105e75d7f4a9025cd7fa799e31. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FRIDO2512383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5962b6da8166b6cd22e5e332eb0268270b2c1bec0c7b2b3f5dbbd2975d66a526. 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/FRIDO2512384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579683f07492306e34ea611967c2e53b0b9651f8881bae9242df575d337832dd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FRIDO2512385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802057bb60633ea17e4e9994798fdeb36b35e24f3f0939f56c21a4762c0b2bfc. 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/FRIDO2512386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ebd82b6f2f576e8a191dbc2f74c4dcc985728064133b7117052ef047712c263. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRIDO2599492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ee7c785d238c79f5dd179e47a9832a0fad5d09d2b231f0580cbf21b8990ed. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/FRIDO2512387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51795551f87301e323be1bd8a0ef95a37e51ae248ceb63bf4bb6bd579ae9bf04. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/FRIDO2512388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421cdb6a0e1aac483b339be490d029f01691a592be81b1a20fce138c43b5fabb. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/FRIDO2512389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f20f66c2998d5a32e3172ed3c8e6fbdad0ee70609f8fef158f90a69a188d8b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRIDO2512390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755b0ff1518157da7b9123c011b1fb325755c9a4845d3823b4c87c2a79f32fda. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM42K1859069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e354263f3663a7c8d0cc4381a7e8ba8cbd285f4261edf38867b6da60914676c. 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/SE5BU2189255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbc82ec83531645018ce8eef98825358803e140f81142c438f06ef5bee00b8d. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZK6M2260924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c8b957b807a75c6f9cf41a545fc39063a08b0126b0a473d32ec8a369488c3b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/IEBAE2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x803dc02d7a86ad3418916ff31c5a010fbd3bce3974479dadf868fe700156ce79. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZZ8A2486614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86533994ab527e9cfd9519e818fa6ac8e92d954a33db826c2a5c1e1ec3022229. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZZEC2457962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1e1e9f8859629da3c91264e2f88a28309f364d93a88cc69de2b9f51a0a8b0d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/PTEN11400109.