Roy Chukwuemeka Nnawuchi, known professionally as Dean Blunt, is a Nigerian-British singer-songwriter, musician, producer, and contemporary artist. He is best known for his current solo work as well a
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 0x6a6e4360a18fb57de329f6b052659f9d177cba7628242d9cc4a264066ec5fd5b. 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/969da860-7492-4d7b-9a0e-19e66ba54cef.json and https://artists.proofprofile.net/proofs/artist/969da860-7492-4d7b-9a0e-19e66ba54cef.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 0xac63c6521223d9e154ebac11adbfc3dd2bd424164310965b6c2c54cb3a49d114. 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/GBBPW1900117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93c2425287f0830de1fc24e23378d39f2bf6472b517d28922bb095716606f98. 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/GBBPW1900121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x353b844456d97d39af4835fa6b061b1042bcbe74b6dc35b893e32e2cdf17b26a. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/GBLZC1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x171cc75c6cf3d3bcfc7de8d2c5af091d1aaae62dc2e95e3941d259cab67708e1. 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/USYBL2000735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x347ee1368a9e2468c31e2b8f081403f3c66e021ebfbd6deb4228fda1b8eec518. 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/USYBL2000736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52b010d7fa60112855d6d1922c7dea3201627113b3cbacd1c62f5441fd56fad. 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/USYBL2000737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc7a05ea28e5947d6135f9ec45289575ec4c511a7f4825eee583d8f1a514add. 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/USYBL2000738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1267c6d7710b82039ee197ad1621d418df6ebbdf860ce059bda3612be14b83b3. 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/USYBL2000739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f6bd7da347eb2e3e41ab11ef101c3f0d3048d2d18aea4c2a4da423ad75f313. 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/USYBL2000745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd852f62d9038eea1190dafecbfa8e47448a9a46f40f0d52adb90a4f950df4523. 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/USYBL2000742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94356399cd8d1bdfbb3523c4dbde3d2e9ed24f0fc453c464d6364410e96cdccb. 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/USYBL2000743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f268678e0ce4e55c48cb94185223cff01eef8307fc9e3998e627ac5966772e8. 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/USYBL2000744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfde773fea3a4625020a5368e244f9ce5c189a95cc01efba7644623e7de4372. 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/USYBL2000746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a32808bf6223986529584756c1cde964d6ae015162a4f4115cf552ea5abe73d. 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/USYBL2000747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7675a3b52395945f1e5ab3a84dd75e2104364950a70971bb2ed097d98890658b. 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/USYBL2000748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dfbe59ce15a7415929da4d5282e94e077f9ac35448eec087929e2eb7f475ebf. 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/USYBL2000749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8526e3f7814fbaa98a35699d788cc5f1fea3ed353ded103ed5a969d68bdfee0. 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/USYBL2000750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf32694b448aaf35d516784878425f46182cef6f94a91eb53216c6a794e823f88. 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/USYBL2000751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61c1c9e851ad22d03870161404ec7b327f6878af662ea93aa2a28e53c192714f. 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/USYBL2000752.