Marlon Rosegold Roudette (born 5 January 1982) is an English singer, songwriter, and record producer. He is the former front man for the duo Mattafix who had their first number 1, "Big City Life", 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 0x12163dad5ddc8b6fe58b34683fb94ce45304c261002d6f406d0499a1e74abba2. 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/ab8361c6-b2cc-4261-9f84-a8a47846b78e.json and https://artists.proofprofile.net/proofs/artist/ab8361c6-b2cc-4261-9f84-a8a47846b78e.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 0x182a5a3154b2f25a35dd1bf8d45d2590d37a2000f289495f1e275ef1c8b49a73. 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/DEUV71100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e9a614d8d092ba1ccc93e96edc8c69866b750ad8bad6d50cb6f58979c70e0d. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB27E1100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x737680d290bbb85275ab161387553bc0418b8c8df4ecd652d66f2c47ae14fe9b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GB27E1100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe102bcd4d7aeabfc3c4f5a52e7755b6a7ce5ea1098ad5c18a77fab008a6dfaf. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GB27E1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe102bcd4d7aeabfc3c4f5a52e7755b6a7ce5ea1098ad5c18a77fab008a6dfaf. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GB27E1100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f58519ccd771af20a7c323df3848fd3c76105a2bc7d36f6a2a14ef935b82596. 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/GB27E1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ff34e1562568dd62d1ba8f351c6f5d46ceb9cd5f114216f5527c7e9b93c4e1. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/GB27E1400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce71dc86fa47c1387c4dcaf8986f95506aa6667f771cace21425b79e3cc1fe9b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/GB27E1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04c8b300db2c74abcc3824ce807fe1247b9b41bbfd263c1288a8cbb68c96b62. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GB27E1400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcf62c863386cd997a0b668de35cfc80ad7cf6aa2d2b2882e28c71072a92eb6. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/GB27E1400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae64ecb9affc799f43eaacf439cb32b375d81abda25020331465c1e040dcf960. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/GB27E1400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d24bc194ff1c8af0fa655dfef70d1455d2f812029490c35481c9f3d0e20bbf. 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/GB27E1400001.
Everybody Feeling Something (feat. KStewart)
Everybody Feeling Something - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533e0be1f40231bd5f44170a00fe10928252714c8142dfa05de96f94da272340. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GB27E1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58137149f2320cae8f9bbe65335266613568b9a3e29a76d52cf74430ac7b4671. 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/GB27E1400018.
Everybody Feeling Something (feat. K Stewart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e4450d6271cc164220333bc35d61ccb918ef76b769d484bbede922b4d0629cc. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/GB27E1500008.
Everybody Feeling Something (Remixes) (feat. KStewart)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501d0724b87cfc6df834f50f0c963195f147888247f96311b348dec879146691. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/GB27E1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35ef2f88dc249efd36c9fa0557980d587f908cce12989fa628cf8fe765c3881. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DECC61400073.