Carlton Douglas Ridenhour (born August 1, 1960), known professionally as Chuck D, is an American rapper, best known as the leader and frontman of the hip-hop group Public Enemy, which he co-founded in
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 0xd52a91044b4fe55e93de25f590b2df4b455f69d027f5984a332a605e1b9ecb22. 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/3fffde35-979f-4f64-832f-db3be223e505.json and https://artists.proofprofile.net/proofs/artist/3fffde35-979f-4f64-832f-db3be223e505.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 0x8af40aad34c1e91fb1137579781fd310731fa1074fce5d2a35e6c58479836d2e. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USPR39630071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4426c1667f8db876d16671f58bfdf62b7b71c14634795276ff6109a9da3798. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USPR39630072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc91180efc9efd994963785f430e92802e174bd21668b42f9c6047b4b981be42. 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/USPR39630075.
Chuck D As Mistachuck: Celebration Of Ignorance
It's So Hard To See My Baseball Cards Move On
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f64e6ac62c3d0efcd57044062dac625f69a54c0851286d96ccd7c1db10bb9f. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/USY252332691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdafc2efd86d79e4bfef9b9964c527de62d351ccd53ba6f4ca6a67b79e2bef3f0. 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/USY252332694.
Chuck D Presents Enemy Radio: Radio Armageddon
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c10eb5202c7b2b1986a64e653784cc9454498796a53c107dbc02c90a9708d04. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/USUG12406728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18194cb2275e5807a0d5ce4ecf70ca14e1b2f73a326c48faa740b673d7b6475d. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/USUG12406730.
Is God She? (with 1/2 Pint & Miranda Writes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5f507be7519c55fe73cf27590377089f97fb1ed71f09b00e1d2cee81b49f62. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USUG12406731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420031b51b062a35532fbd1aa796b90fe5450c224a3ec993181e96a2dc255340. 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/USUG12406732.
Here We Are Heard (with The Impossebulls)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b5667d1c0152f5e616bcaa5e3999b8bb48e54e5f9c23634f77a37873bd41aa. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUG12406733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe190034a7e07f000e923623a3d3c33518f48f9cf979344b624f0d6a458cd8e5e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUG12406734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e31cd467f41f1d232bbf03daa945fc4a7fb9c0805b9bdb26ec33408b86144be. 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/USUG12406735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc945d8f422890389c3aff6fd82b6eb8cc958256c041d857edfee0ac65c28be4b. 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/USUG12406736.
Slight Story Style Sound (with Donald D & Jazzy Jay)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ea5dc70fb5c6b87c87e722980c31c80d4ad5f22d7dbb1b1b7cc832f0e2aef4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USUG12406737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0ba7af17ff217c32f349fb28ed35ba0ef8bf4308fd16333e03e4a3be7b5aa3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USUG12406738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eed533b296eb1cebf09c9f77addba4df00755bea949381fd63a915d8cc23c3. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/USUG12406725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aa0f8dea6c2bbb3b10b72aa39f9c165593fe7da5fcfef360d17fa8c3ca5cbee. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USUG12502945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4967ef00b2b4248915c3e5c82ec52c515bafd9c37249eab07c9230c8a7c3ccdd. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USUG12406727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856f72ea44490c558330ed6eaefaf45621bdb22d00d63c8c533a301c781bbe2. 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/USUG12502942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd0ba7af17ff217c32f349fb28ed35ba0ef8bf4308fd16333e03e4a3be7b5aa3. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/USUG12406738.
Beautiful People (feat. Chuck D & Mama Ferg)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1356c09fd837b8fd48379153e9f093f2a9c16ef1b746cf7e806cb506399df12. 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/USRC11600610.
Sheryl: Music From The Feature Documentary
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d9c0a456f96f4e3edb1cb125bc8c671296364a7de2c3b9aa213e5038019c9. 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/USLXJ1943015.
Kindred (feat. Chuck D & Brenna Gethers)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bb5bb8ef8081960f7ff135c9fd03a3e9194f28fe17db8b95948f6a42bb9003. 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/US6881000884.
Threads (Big Machine Radio Release Special)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764d9c0a456f96f4e3edb1cb125bc8c671296364a7de2c3b9aa213e5038019c9. 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/USLXJ1943015.
Undisputed (feat. Chuck D) - The Moneyapolis Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c88bb0b349b185b703a2361e68820925c9de252267d17d1cb3a68c5c2cd98d0. 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/USQX91801844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a81d82a5f7469b0163666df34defa129b164776a0a334cd1d5bc4d0e26cf8e. 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/USQX91801858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3383c1b4d9d230c9c4bdec3e82be17fc0b63b7f987e00fc2d92b09acd8430e08. 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/USUM71702805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcded7eb4178ae887876d2afa941761da7b13d90318ba2ab4616f14a550cefacc. 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/USUM70831625.
Rise 'N' Shine (feat. Chuck D. & KRS-One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7398a6a69dbc22b075a179e9d715855863216c765870c07028996dda710eea9a. 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/USJI10300476.
Rise N' Shine (feat. Chuck D. & KRS-One) - Short Version
Rise n' Shine (feat. Chuck D. & KRS-One)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3ae5e834c77aeafac4226049a13008222660bd65bb8d0a19ee9acd43b246b1. 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/USJI11700002.
Vendetta (feat. Ras Kass, Planet Asia, Chuck D & Bronze Nazareth)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe55c5f675f9418f1737b9c3539696b3ae4dd7ab4797d9e2f8a26ec0477cbcb. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/USZEG1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dee8fa7ed64a84dc45c5b0dd6861be675910120521e867b74adace6d3af425. 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/USHKR0918420.