David Alistair Pearce (born 14 June 1963) is an English dance DJ, EDM producer and broadcaster, who has performed across the United Kingdom and the world. He previously presented Dance Anthems on BBC
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 0x90510aeb7f576b2da588d2368623652b29ce997bb177ce37bfa2dba525c68a55. 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/25819281-94a0-4e57-afd9-8776f7746c50.json and https://artists.proofprofile.net/proofs/artist/25819281-94a0-4e57-afd9-8776f7746c50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Delirium Summer Trance (Mixed by Dave Pearce)
Delirium Trance 2017 - Presented by Dave Pearce
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 0x8cc4fa4fd59decb691ad5caaed7d3bf4b0284a21a7e2cb5c734042874f8cefbe. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DEW760900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1defd89ad6c9e7ec116f807aafc84bb561f992a52d673de8a7ea157b7228f41e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBDLM1400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c6640188b9e056515ef875421cd95a453fecc36b9a5700fc6537787aa188c7. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/NLB779800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc694f539aebf8bd289021def6e7c3aaac21bfa6fc46716da206afcdef0b7a4b. 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/GBVVQ1037063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4dd5eb2418af2a2c6901df48e4973ad1b40e4ff778a54d6748174eae78e602. 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/BEZ460000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c77ebc02624ab57264dbc14aa30a9fb9275a919343b2b2d9e09b05428818f46. 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/BEZ451200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2419d18c126e3a961159142af24df88a1b93be2b70c4a4b9f778e4bdc4d84d4c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEPN61100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a182cbb4b0e2095bfbc22d3ec9a2405864c594257b6004e462aba72e98276ca. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/BEZ451200616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79b9ff06658886f7ac6a97bc417660932e247cd7c78e88b5e409ad7c57c8015. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GBHCD1104120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040a8556b894bbc259d93d8dd6b7341702b08e45d029391122850828a8017267. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/GBCRL0800254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe3ff42ca3c5194acc46517251f2fdcd005b950d9e40c26692e79e8cf38981d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/GBCUY9900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf923d91a31fb6d5bcf624deb60b8db711a64df816ccec02e2c51b8bc67235a5a. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/NLB770300090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf253aef385fb9157090bda6940dfdd2ac71d4f8cbd2da3d8a9f0658aa0f4a4b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEE829815051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a83a1c8c17f913c3e001a76f3358d8dcc95d719c1edb2d0baa436e7891c550. 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/NLF710801770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2c2709d6e1398b267d782cf2e0b439a64cf27e4cd99374d8d9f074ae1f93ee. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEN120301078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e88a950a0eba2b5ae85fca95eb2dba822c4f43589fdd51b92058b47ab636ff. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/DEX790800291.