UTFO (an abbreviation for Untouchable Force Organization) was an American hip-hop group from Brooklyn, New York City. The group consisted of Kangol Kid (born Shaun Shiller Fequiere; August 10, 1966 –
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 0x9371808918ed4b4a6cb59d1f57cf02052f3d450e33eb2326fa2ae20ad5c405fb. 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/22ff17e2-499c-4b61-828f-61f85675862e.json and https://artists.proofprofile.net/proofs/artist/22ff17e2-499c-4b61-828f-61f85675862e.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 0xeb90f3d77b835fe3e9c1a5c562c8432db3f39f2cee4e91c330c1f7377126d906. 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/US39N0400349.
Hip-Hop Props (Vinnie of Naughty By Nature)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1675615353903c753c98ac0b8e1e3514597cb51943601dec129ff80cbc41a7bf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US39N0400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe523c98479115c59f561ccae09d615e551799dfc4a316d1a38063848d9618803. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US39N0400351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26aa68e436f2886ff856293004d531e4b48b4a83a040f0b3b93df18f631090bc. 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/US39N0400352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aac318967415783a23c6ad018b3f37e02e3d6a883545d86af28d48edbb9ea11. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/US39N0400353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4755448b900ed0ba10342662dc85cc3fdc9e1ef32efa6e743b2796d3d5060e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US39N0400354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ad9bd0b2c3458dd987d644ce92b8d4c02299049474eccd1f60575ffb20b8cd. 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/US39N0400355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e6fa760234cd6ca92692b080be98d87a393343be124e6b95787bb2acdf0613. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/US39N0400356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b303b97810d33b192b8b5122e37903197aac7017587838ac80780dfea744445. 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/US39N0400357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efc4fec7d0c5ecb946da7339cc2296236a450e195740b5a533c843803c1ded7. 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/US39N0400358.
Hip Hop Props (Tuffy Of Video Music Box)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b29aa632995b7c02ff9a34bb23fc28c026a6ab630f121bffe81d7dea6128e0d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/US39N0400359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d1f7d1ea5114481027f461315145ad32f6c4293fc90755c21bceeefa7f08fd. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/US39N0400360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c3657660129e0f0e403d8b7a7f80b6275780c0d0f0264093deffe3bd5f2b6a. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US39N0400361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7de5f6fb386d9e65c10933ee606350ceab456df3474a24f4a92493003c5aa10. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/US39N0400362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d7d39e40bc8bc9fd4144aef054e2e3ba4ecd579567395ece2aa698183b199d. 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/US39N0400363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebbf8ed25fe3d247b8a1c0626a671b45f96ac895b8258167f867410bbfa181a2. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/US39N0400364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6c5de02fc8c89b913194f4f089151e6b1b287bf16e8ec0c109df2f8080a503. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US39N0400365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d1c7809c0614cd654d1b770d1d9ba8f33d503c5ba74434e12de33d44ceab30. 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/US39N0400367.