Deepest Blue are a British electronic music duo comprising Matt Schwartz and Joel Edwards. They are best known for their UK Top 10 hit singles, "Deepest Blue" (2003) and "Give It Away" (2004). Histo
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 0xe64bb4564e9ee5ff7208963e15fab8cfda4db8c39c4ca4a0ef4ad02d675ac61c. 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/2190db67-53ee-4bf7-b386-8a313cd06375.json and https://artists.proofprofile.net/proofs/artist/2190db67-53ee-4bf7-b386-8a313cd06375.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 0x9bb9b49577aaf4d4871eced68cbd494db6610797a98bdd20c1cf992fa027e1a5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBCEN0300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb9b49577aaf4d4871eced68cbd494db6610797a98bdd20c1cf992fa027e1a5. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/GBCEN0300100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fee70e6cc8de2cf5803750bc16ee0aaf5708e976b20175b2c2d9b8080c3f791. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBCEN0300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1ea3637e347438db4faa28eaa972850160845be226bde5c61ae1e5aaf6d6119. 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/GBCEN0300108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892c7d1d3b4626ed97b13d6e43b060e3ffb37ff86f5d12f4ff24dffd132b0cd2. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBCEN0300220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8bea81bd2cf2e9350db555eee08dada1bd5ecf23020347a2ba98ce148646a0a. 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/GBCEN0300221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3fe306ea8fc6b9a8bbcb4c212e07a57b45df33a7788df2ea8418650e10fbe2. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/GBCEN0400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc496d3384ceb60eebd1e234c98bf43f53b1f4964858dbcdd73022d7b396c26f6. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/GBCEN0400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f91e24935c6a95d50873a03fb0e98cfba0af9fdf5ad6a0a0d0ba968fce10e54. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GBCEN0400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45d15cdcc891f5bff5af15ce8ef93c6b70bbf26bf565450e46e75ff14fbaaabe. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/GBCEN0400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x099f5f83a8071c8843d893ef8c414547192c5ecc2398bd4b9ac2df2b4e9b73ed. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/GBCEN0400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0591a2e74f9e5c1f0ebaf27c0422ee273a44e808c793c61d543d56ab45e29fb2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GBAHT2000830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0b2d2c65b23fc0931a925489b02b92088b0e2437bfe0b5f815c744b9837dfb. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/GBAHT2100056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde66ec52318608740f96225fcf5f9bdf665ed6554b29cdd324a27f7d3ed570c8. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLF712500062.
FYH436 - Find Your Harmony Radio Episode #436
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9279d6ef65fb083930548b3a7c45ec78008206a0a774ada4a462745b66df36. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBKQU2517035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96df3724090aeab6cdbbf0aa408e19c4b7cb40a1d5b5434497530530b1721826. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBKQU2519148.