David Andrew Phoenix (born 1966) is an English biochemist and Vice-Chancellor of The Open University. Academic background Phoenix read biochemistry at the University of Liverpool then studied part-
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 0xdc7ea8fc4797309f493e650802ecbdc8ca980212e30bfacfc09ce445f199d5ad. 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/5327bb7a-062a-4dcd-ab1a-045d659cfbd2.json and https://artists.proofprofile.net/proofs/artist/5327bb7a-062a-4dcd-ab1a-045d659cfbd2.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 0x061c8aa2f0785aa43d402e3361228d6b7902761ef0a01ad1cf442d56595d8dc2. 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/CA5KR2182625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x008da489edf0a866bf2450bd60faa937a0c834cd6527cf0fd949c96bd9f44192. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/US83Z2128712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9532e4ab73d87604cd731c1273c53927482cd0642ae62b3f5ee1aaa3825305. 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/CA5KR2188543.
Thought Extraction (Artur Achziger Remix)
Thought Extraction (Lost ON Earth Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51124d94ee24ee8731a0c289bf7d58a5d6d3b41202858321bd3a8af8c3300655. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:15:46Z), 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/CA5KR2335748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36c6c1ebbcf01584e18aa47ea27faee2100de1420d180d7f538876616f2ab41. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:17:18Z), 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/US83Z2339722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7629c808f38c5e29241dd3ca534081180a6348657ccb7654fe89a6980f67237. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/US83Z2343123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c9e378475c13d6c103f1e97288e6fce639863349481c19253a2e2df5254ac. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/US83Z2343124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d171c45c9d9f8668dbf25bd4658176d41e1368ef9496043f36ed4f436d5f25. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/US83Z2343126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19c7a2f24f84801ae0daec075971d31761780b0b86c545310901ab72caf8168. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US83Z2467028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e32a7572039ef1aa26d6b25a875d9f33f2a8383e4c5ced484391f3f251a405. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/US83Z2467029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x275c0a546ccd9f59c611e86a064ca7d417e6eb88964072738d36d125834a5cbc. 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/US83Z2480268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c51babdc8664d602d36f4779e8ab306ba6c4bda67afc0ef915630b0585ea84. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/US83Z2492324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43197f2e91cc719ec86378a0eb8d2d4ef842238fdcde9a772f69accb6d6edf43. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:23Z), 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/US83Z2497547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde716980ec94f808a799bca2cdcd03b017de88866bc20bfb2061d055c2f8ae98. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/US83Z2539141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa454839af55bdd149394eb53f65f4876168998418fde3f9bf0a2bfc66bc9a720. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/US83Z2539142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f53e81d81d0968e50c21fda4aa9bbaf732655bec77dea7aeb8a30f0e4b90307. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/US83Z2540409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaf8e04d82f609f47e8e98577774225ef9f5ad0982d6f4daae3441e261139cd9. 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/US83Z2209882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f54f662b705b31d34383de247e64408be1e80c60fd350956b065d423194104. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2353933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b6689c66234bfce7caf8dc1ae9cfb3c95e7cafab1614851684eaa39f26a386. 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/US83Z2353934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08194001115f95fa1fa939037f553b74fd87af5327a89547ee0e1c59ba63c40f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEH742049424.