James Campbell (born March 27, 1969), is an American rapper and record producer, better known by his stage names Freddie Foxxx and Bumpy Knuckles. Biography Foxxx started rapping in the early 1980s.
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35f8c1e0a00fbd80b30086cd77771ff90ac9198d843659a0e09b7899f042242. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b42a882f-126f-46a0-9a7f-cb1e3ab3afb3.json and https://artists.proofprofile.net/proofs/artist/b42a882f-126f-46a0-9a7f-cb1e3ab3afb3.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x286cfc67ab8ee3e790309cd5a3849ba4b7a0a120caaf9d1662f32bb7b589e1b4. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEG930210132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfa0d9a24b9cf2534f3b0ce019607ea6585b703f9809a00c58a3a4b16b01363. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USLR29710091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfa0d9a24b9cf2534f3b0ce019607ea6585b703f9809a00c58a3a4b16b01363. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USLR29710091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04d3f6a905dd83f084b5fc7a6a9df793cfbaa46489c4e9ef12373f78375b6b. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEQ021804884.
Reppin' NY (feat. Lil Fame, Joell Ortiz & Freddie Foxxx)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32409456492bf9908cf1ae17fb6ead3ecc7bc0f4bdcc2274f389e17c32dc7d93. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/US6881000620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc1da891a71564226eab46a1c4f697c3838aef6464616598bad13f38b211257. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USVI29800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37f9a98dcc414d103bf7faa14a611d05b82c4b44f4dc9683d6680f25916eb4c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/USUYG1068417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f58bcbb7394e7e20bc4f6e4d7352f3220350c685b50dc5be69680b69964401. 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/USRW50200062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed50bbdf55187be3e31d7d83b1227a5d01db41b87ce3a13a52fc0d2a42380c3. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBEQT0100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beee7e1bf666675ece889ab00c30615f380c43618ecd09620547549c928a5cd. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBMYF0900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beee7e1bf666675ece889ab00c30615f380c43618ecd09620547549c928a5cd. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBMYF0900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc1da891a71564226eab46a1c4f697c3838aef6464616598bad13f38b211257. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USVI29800047.
Mass Appeal: The Best Of Gang Starr (Explicit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc1da891a71564226eab46a1c4f697c3838aef6464616598bad13f38b211257. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVI29800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4884b8dac7f80f29a803e55c9e1dc3f24181ed90b0187039fe68e1f962add9a7. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/TCADT1878290.
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 0x1273d09909a367b07b2edddd9a81c0ebb16ac6b43b577d86c48211408591ecc8. 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/US6YF0900066.