Guy Rupert Berryman (born 12 April 1978) is a Scottish musician, songwriter, producer, businessman and designer. He is best known as the bassist of the rock band Coldplay and electronic supergroup App
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 0x8f34ce836083d0717a22f15b25cd561253acf19b4fd3678db5e39d7c6ff8d687. 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/f387c751-a7c9-4e99-a5ca-9ad8cee08e11.json and https://artists.proofprofile.net/proofs/artist/f387c751-a7c9-4e99-a5ca-9ad8cee08e11.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 0x7f40c6ab9e45e6100f7e60c401cfa4bef5f69d073a9e74b3efba55c09dda8862. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:09:17Z), 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/GBGRH1300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f42928856423586feb52300f32510a47ba757ab5c6b6c12b32472e0c7a17771. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/GBGRH1300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34bd3755c716d523269ec40e8bc7fdd3c7f9b210f85dbb63e05a1d38d13d9aa5. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBGRH1300064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66357a7cbbdee8e6af898afa1540d45afb4001a29e07ce367a457913d4d56081. 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/GBGRH1300065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29b486ea1a5ea5ecc8a84b2f575a398aa135e642313457122e5a48554fc2fdc. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/GBGRH1300066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877e641b71fbd64cef1b1933a1c1165bd8c149b0605a70fc4a23377467a469e7. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/GBGRH1300067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7492596bda9109d600395eee0d688187abfc17ddaf5938d9b5772ec2c31bcc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBGRH1300068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a3037e02ff4a53a15c530d43e6763fbc89d250cb8e4cc32f22219055932aa1. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/GBGRH1300069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc87fc77595ce7063908eb3304b0614c9d1af0a3e4d2f3f9c571306a994b7de4. 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/GBGRH1300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9321ea95fffc9e63680ec6bea69f21f2ecc75177a93ce31811f11a57f75488. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBGRH1300072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f52dcaa9ff4c433f0af6e8d5ed0df17025a03fe9d5cb55b7eb283c9138328ba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:11:56Z), 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/GBGRH1300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d3bfb6e240e8dadb54ea439e9c3ac280ad6a9f39ad1ab2fa29bff874d194a3. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBPS81528346.
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a79a176ab5df36f93508cd003809e8150000b37a4b94a87000b1c0e1d7d80ad. 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/GBUM70708693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f67cae7d303657a5a229c7354ba3016d658c722b8b234ea9ba00733163bd68e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USQX91502579.