Field Music are an English rock band from Sunderland, Tyne and Wear, England, that formed in 2004. The band's core consists of brothers David Brewis and Peter Brewis. Andrew Moore was the original key
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 0x78f9a8566b96889bb2c7df3924cc4b3375a0479db9899fbe2397efd93cb0b20c. 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/16cc6a06-d071-4b43-907e-8ff741762a4e.json and https://artists.proofprofile.net/proofs/artist/16cc6a06-d071-4b43-907e-8ff741762a4e.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 0x4b4d2c032705d823a957ac65dfae18b5ec6556960c8b156a494819c4739c4176. 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/GBCSG0600103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c8e196c1714439f85ce51f731339b1c8e8272544dc72b38ae4714c48d639dd. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/GBCSG0600106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0368461f2496617f0eaa9768e7bda1adfff4aa6393a7627c28869cc4f7a09c9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBCSG0600110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b6bfefed470ddbe3c850f40d02c4c09ba0c7424439bdfb5c5b7d7c2c47d6d5. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/GBCSG1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b7532a61317204f54fcb6d0eb0d32210dca5b5bc83c9c1ae66dbc48cd9ec45. Chain 2 (Bitcoin): anchored in block 957608 (2026-07-11T21:00:50Z), 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/GBCSG1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b6bfefed470ddbe3c850f40d02c4c09ba0c7424439bdfb5c5b7d7c2c47d6d5. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/GBCSG1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b7532a61317204f54fcb6d0eb0d32210dca5b5bc83c9c1ae66dbc48cd9ec45. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBCSG1000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd441a8d05f5782e155b621cb7dd1da7377f4a3ede7b9290ccf6dbf9b74072791. 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/GBCSG1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d546bc6313db82281e7d538d738cf4734dae351af94393e59967d0d9f9049ea. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:37:03Z), 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/GBCSG1600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2300e7e1f6204484066d961d9dcb7358a05033d19f08461cffca45bb7003fe. 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/GBCSG1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3908ab30eec6c185904ee809e1fa35849f3ec98ecd578183c4ae3c46668a574a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBCSG1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2300e7e1f6204484066d961d9dcb7358a05033d19f08461cffca45bb7003fe. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GBCSG1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289318b3d0a8b4f46db530b54d9786b4917ce2217a5be010a7458fbc3a32da00. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBCSG1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f8e6ee041883d8778aff2e3506885acc744b286030e8bc022f56ba6f74b8c0. 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/GBCSG2000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371aaa39b39750991b8397fdfa53690b0490720afff25ef366dc09e454a6168b. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GBCSG2000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4f8e6ee041883d8778aff2e3506885acc744b286030e8bc022f56ba6f74b8c0. 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/GBCSG2000168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371aaa39b39750991b8397fdfa53690b0490720afff25ef366dc09e454a6168b. 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/GBCSG2000169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda81efc0a230f80d9c8e9e1f099c1daa400c735e5d70ac5c7035692f8c22281. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T12:00:43Z), 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/GBCSG2000173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f8e1f46438767c19a38031cec52f14ef7eb7ca35cb3834325836965f4fdc1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBCSG2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa76576193603f2ad8ec64978e5b433bc511dbe3052097e139a589c5353ae3384. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/GBCSG2400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf523ceff1202335d3d8f13f78b8107a6e1a4bb3c63122d1c1f51e30552772843. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBCSG2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb55ca613d6c649af345b5d4fa19be030745f45a617bde92a0b2935bd9bca751d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:10:35Z), 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/GBCSG2400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5f8e1f46438767c19a38031cec52f14ef7eb7ca35cb3834325836965f4fdc1. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBCSG2400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf523ceff1202335d3d8f13f78b8107a6e1a4bb3c63122d1c1f51e30552772843. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBCSG2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ff674e3a86ce7eda21d56cee946ea501802f6244b73cb7f20d4e528d94b59. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX7F82300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46221c0b3093443ddd40213d296303e051fcf98300577f1266023d0d7cead28. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/GX7F82300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ff674e3a86ce7eda21d56cee946ea501802f6244b73cb7f20d4e528d94b59. 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/GX7F82300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1f4197bc0644d7443335ed45aa6fb401a5c2dc63dfd2779ea3997a2046a3e2. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T21:03:00Z), 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/GX7F82300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027fca26a6960416f6e2b74e98a6a80a0b87c4e21f798b7afc06057062502bba. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:06Z), 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/GX7F82300030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd46221c0b3093443ddd40213d296303e051fcf98300577f1266023d0d7cead28. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GX7F82300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77bcf156085e2ca321f53244cd9660ce0e298a87fe75fd92a1d5783f3ae13d3. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:28:16Z), 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/GX7F82300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4ff674e3a86ce7eda21d56cee946ea501802f6244b73cb7f20d4e528d94b59. 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/GX7F82300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea1f4197bc0644d7443335ed45aa6fb401a5c2dc63dfd2779ea3997a2046a3e2. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T08:25:43Z), 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/GX7F82300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff756eaa6b2538326a602c259a29c0a425123d18e9bca11af97e54f6609aea7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T06:52:59Z), 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/GX7F82300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3384cd95a488300eab2d2c085e39528bc8691c9d8dd6b07ca64f04163f588c5. 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/GX7F82300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0195dc3db18bcf348d502bed922f79854c17a53ad68a5ec4255d7a31e043c3. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBSZF1600232.