Monsta Island Czars (M.I.C.) was a Long Island/New York City Hip-hop collective that was formed by MF Grimm in 1993, and included MF DOOM among numerous Long Beach MC's, producers, DJs, graffiti artis
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 0xa71b4138b7594c4478f7ffe44566ecabb0f2fb9219e974f4d4ed422c2667d635. 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/f67c114e-0362-4d4a-8841-b9ccdce2ebb2.json and https://artists.proofprofile.net/proofs/artist/f67c114e-0362-4d4a-8841-b9ccdce2ebb2.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 0xc3cf2af77515d4a9f775c869001c570a37c09192152029a79605b0f471048038. 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/QM6MZ1904898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8186d8ee216a3585efbaa70e8826b3eb2a65986224006e72fee056b84b95fbef. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/QM6MZ1904900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914cfe51d6333166be3e736807c50ff2a943c1bd9343735e0c21f6663938cab4. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QM6MZ1904901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c19fc492802a010ed63fa0144658c81a2c5088e56383aeb394ec6da6b36d16d. 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/QM6MZ1904903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8b689bda31a41bdf1c5869dcc1f3889dae897a08a3c9f568fd17f5d4af6d7c. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QM6MZ1904905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd191d091a4e772fde53fe2b008fb2247ff66f46b87355b0c4ce663d581c51fd. 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/QM6MZ1904906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366183a6f5c83e2d3de1fc574dda8e5fb2c8bbfb91b859ca3bf42707da218612. 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/QM6MZ1904907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a722986483239178fdf465a1f6b956c5a6844e3e86f42bbef43d8a685c4eaab. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/QM6MZ1904909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb902e8ab3c7a2d8b148a2b873ff67109c58cd83ee746b88116044ffb9a4f49. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QM6MZ1904910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb15bd38f5e6dd2f1b0d1e1948b99e649eb5564b3cbce50a50ff1ed993583079. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T21:10:13Z), 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/QM6MZ1904911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc81bafbb05c6997d214627ca06c30d597519f76564c5fe1932e83f2862983b6. 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/QM6MZ1904912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5827578c2662a9ced150e80bbdb77a2ebd7438f5a2fc808a62272f471d64f8. 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/QM6MZ1904913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37e3e93e085cbd5cb62a073d834d8a20c609fccea86d7f4575ba09f9cbbd638. 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/QM6MZ1904916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41469136ab215097950cdd3b1a086c7af452c533fdbbde005518562d8887ed3c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6MZ1904915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c80a8f6a7780a80ca4fc4fe0f3383d2e7932d1711ce3bd5c1669ba6248a8ad. 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/QM6MZ1904917.
RSE20: 20 Years of Rhymesayers Entertainment
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d29013b3135428739134e044adb72d3475afa38a380202895d1f56093439884. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USBWK1500169.