Patrick Warren (born March 26, 1957) is an American musician, composer, and record producer. He is known for his work on the films Magnolia, Fifty Shades of Grey, Boogie Nights and Red State, as well
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 0x493b7418abb8b0e2d2c37c5beb4ea7e8db1db9594c484d8b7c62d1895c0f4804. Chain 2 (Bitcoin): anchored in block 953954 (2026-06-16T14:18:37Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/246f689e-5e81-42ef-8d46-fccb0115b55f.json and https://artists.proofprofile.net/proofs/artist/246f689e-5e81-42ef-8d46-fccb0115b55f.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 0xae180e18de466a4d746c77f2ce55a221ff5df842b0939b98f7953118ca8b5ecb. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USXDT1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f34ae37e09f09303ad2cff310b8a97e9c95f49d8b2da9bdbb04f1214bd9b28. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USXDT1500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ecbf722e844f197dd88501da1e7df934fe0cc96906eb2128171ea3c239ca3b4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USXDT1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6ba616b941446bd3b43dc7498830e9a09c0519d7abc90575ba45ec3ec9c43e. 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/USXDT1500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15763b32ebf268e234ceb1fbe8e3f6c2f17db30a712ed329e33af26b5a94917c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USXDT1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddaee53848ec8d464cf0c2d926d332ddcf22c2c9c2e41ff90d86d3e753d9cef5. 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/USXDT1500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b9388f7441a8689e3cbab411e15249e7a065e209b0eb93d7a8faa7534bd8ed. 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/USXDT1500002.
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 0x6325fec421efe1fa9ff618bfe50d745310fad3b91d6303da18963dd07ee2f10c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USXDT1500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeca35cb0d436bee7629fb9df23afb1393c742688f21b476b4adea7691717263. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USXDT1500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78190ebf43b78fe4afcc087e1e6bc9db4afc86b2f44bcccdf5577065ad758e00. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USXDT1500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc7bc6137b0a91aca33b962059010dfb0a77f8ec767e03cd54a4d4796b0d810. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/USXDT1500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1816c96f2b219ea7c72c0d6d590609bc72f1ebc33cc44e4d6de99bbe8f6e131. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USXDT1500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e410389c4c9dc771f8c6f4e301697ea2757730b4cd4ac327bc9746caf330aa9. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USXDT1500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c05a5e0e8fb7bf94ef540cc7c4257104b2bbd124d9a1062e13b900965d9e177. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/US8340700150.