Delta Sleep are a British math rock band, formed in 2010 in Canterbury. They are currently based in Brighton and consist of Devin Yüceil on guitar and vocals, Glen Hodgson on guitar, Dave Jackson o
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 0xf765406b47c2837ded0aa6623af2681d834a7f635a49e53ceb2cc8a42b95f667. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3cfe49f2-a636-464d-96b9-121d7098423d.json and https://artists.proofprofile.net/proofs/artist/3cfe49f2-a636-464d-96b9-121d7098423d.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 0x6fbece4333efa37ff3ebd2c7b577dad50042ebae11ba6064fb845cd0e3d2fe4f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:48:38Z), 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/QM7281646450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed19b7f684463f5017b3b400a8abcb4d40022f003ca171a2be92446e6b067476. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:18:57Z), 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/QM6N21849024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90166b6ee7aceaae59d21d8ca4b1f8d7ea5e06c0ec6ca3b4cacb6a1f9fee89f9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QM99V1809303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbff51ad27a775ab6fdda9ff4d5de38d780b124b435d167ccd63a4b47ebafad13. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM4TW1960756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa058ebb1fe4d1b491ddfd987d28025e594f99852f89876390ef1d2719e71180e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QM7281908318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2035450fc35d40add435e4512398d746cffec08844120d5baee7bf01257102ba. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QM7281908320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929943486947561bb8fde31626231153c4ee0d9e0cadad4d3fc8ef6537d59110. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:49:19Z), 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/QM7281908321.
Dream Thang - Brooklyn, NY, US (Soft Sounds)
Camp Adventure - Tokyo, JP (Soft Sounds)
Three Ghosts - Aegean Sea, TU (Soft Sounds)
Single File - Venice Beach, CA, US (Soft Sounds)
El Pastor - Dallas, TX, US (Soft Sounds)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03cc7fd01e529fa53dbf4bb1e801debf9328bed0fcfbe2217f69d801c2473d88. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QM6N22026084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d4138e648514b92290f9d2f964f132fcb0a3420b3ed232485846b622300dbde. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:31:24Z), 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/QM6N22040731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb56aaaa41ec5b99bbc46e498d10728fdf57fcda56096d50e1bb1f7ec20d04ae5. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:20Z), 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/QM6N22079638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a38df0b664952c8487f842efe53e2daddc473e8484e0bb1d2c926db55024c2a. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/QM6N22080262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc06994728ba1e98628563fef2fb9b87756b8821dc7cfce889105b4e9c2e2612c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:06:37Z), 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/QM6P42026327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc8ed47181e9af8c09770b5b0298abbfbad9d40f581a1abe710aebdbabf89a1. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QM6P42055654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b58ccdc4e3ca608a156c110af51b40a2689fc0a6ca5bfefc4c8abc04e5fe9e1. 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/QM6P42073413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5cf342d711f6646a1c06e88d408bd696c81a90bf4f591e194f1cb1146a0aec. Chain 2 (Bitcoin): anchored in block 957697 (2026-07-12T11:22:18Z), 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/QM7282002684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0779accbbec3240b9fb006f30e9acb1580b7fc411fa78a37ddcc84ae0dbb867a. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/UK9AV2101247.