John Fuentes (born February 7, 1977), professionally known by his stage name SaBac Red (or simply Sabac), is an American rapper and audio engineer from New York City. He is a member of hip-hop quartet
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 0x993cfd57421ea222f572de457c420fe75b57c8251c80e2add94a74a0a283dcc4. 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/0fca1d6a-79d2-4b73-811a-632831fdabd0.json and https://artists.proofprofile.net/proofs/artist/0fca1d6a-79d2-4b73-811a-632831fdabd0.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 0x2596e4c16f51010ad0f0dfbcdeac6a2c104fa8e45da84f6b22b514716adcae7d. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/DEZC62291248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c9e2489c674dcf491b129123dfdf1c58b4310593120be7e373c2463a593e3c. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/DEZC62291253.
How We Think (feat. Sick Jacken, Slaine & Sabac Red)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb566852590b4b30edf6d9c612e2de938799b8b29c90f0e3f1b5c993fe0be7059. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US6881000566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c0bdfa8a705670dfb86188a4aa5b1b74ea37fb456363a2cb4ad0c2b0862453. 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/USA560960076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dafb2b031b03c48d42f017710471b8da5982fb10572a7d2bae4ae4263196fa. 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/QM7281674485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b1557fd4595db8af5240d55c7bdcdc4a6c1a8f56a90e03ac5725c4b4bec9c2. 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/QM7281674161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace4b572e53e78028af858068b86b0a005f36e9784c92c19e9dcd019af6977c5. 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/USJEJ0624313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f9d6850ec259581292d893440ab8bc1c4d7d46f73f2b55b68c599246cf610d. 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/USA560696202.
The Underworld 2 (feat. Havoc, Kid Fade, Johnny Richter, Kool G Rap, Chino Xl, Slaine, Necro, Ruste Juxx, Kuniva, Sabac Red, Ill Bill, Sean Price & DJ Illegal)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x848b02099ea2f523b2902c66fb34b5a84b7ba47863d348c39fd7a84cfe43f25f. 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/TCACM1693180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62389ee5bf4ede914434b722c0447a7c4b7824882a4a6dc1e7f37d28cd9979f. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USA2P1202769.
East Coast Avengers present DC the MIDI Alien : Avengers Airwaves
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f281d38786f32f2aa7ce7c74532a6ac878f3b48017abe6af63e9a188dfa28. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/US4UZ1110001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4cfef8c888adeaf0f83cacb1a4dfa0613e141f83201a292b25a49603fec13d. 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/US4UZ1110003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b82e11614f4ce30a2520cbe2d76f40581d26dd6f0a17029ea1b033f1e3536ae. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/US4UZ1110010.
East Coast Avengers present DC the MIDI Alien : Man Made Ways b/w The Right To Remain Violent
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b0f67795177b91ca9ae35bf81e2d8840f2bd1d21c5160891c2009c25c21a8b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/US4UZ1010187.