thumb|right|Fuck Buttons performing at All Tomorrow's Parties, Mt Buller, Australia in 2009 Fuck Buttons were a British electronic music duo formed in 2004 in Bristol by Andrew Hung and Benjamin John
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 0x0fc8125e2721d9936e47eae7fc3054500bf59b93b514b3e9b49fec140bc6f44c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b61075d4-57f2-430e-a621-644f9ae93d2f.json and https://artists.proofprofile.net/proofs/artist/b61075d4-57f2-430e-a621-644f9ae93d2f.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 0x959b9bf1ff78ec0644032b9d2aa05846053ca28f23fdcecc3dcdc18947dcc664. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBMUA0700027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee760dbd99478b708441c4136c0ccb6cc4920f024227ef836c74865875ce1393. 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/GBMUA0700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed7e72478cb87ad0d279366527503eb8b12dae7454151f90b590c4f68ff5038. 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/GBMUA0700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde06c0cbe9e53a9cca6e634d29b0c76de49fce2151fcb821597d09e6b4021c27. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:49:18Z), 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/GBMUA0700031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fd6a4c708491975d06442b82eb91ebb25847c220e22b82a3759c804968fec42. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:54:39Z), 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/GBMUA0900032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658fc8708c6d136bb18b4b2e2c3d331b94d23c893fe9495885555b68998696e5. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T02:32:46Z), 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/GBMUA0900026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8082b7bf5919bcbf3dd3f17d6680b0a34008a9118b65acd3bdbb93541764264d. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/GBMUA0900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ddd337cc4690f010e4613ae1e4e82a593c5c641759ca7534516648b14409bcb. 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/GBMUA0900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd2d30d98c8eb428e3839dc7a472ddfc589ce413b4dc8bb1658d955d86e19da. 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/GBMUA0900031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca052ac44f78ba54c3ebe09f1b9f4ab4dab382313299f90d606a9e3d3740d258. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UK2EF1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d4a25554c04c5c875962d9f985e7edf01ec71649aacbd4ef681fe7b6207888. Chain 2 (Bitcoin): anchored in block 959011 (2026-07-21T16:10:20Z), 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/UK2EF1300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42469afd25ae41e984ca295170343554798ea5875ea78591a8d24a0c00d49cc1. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/UK2EF1300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f204e7c8f4efd1e9cd1e0eb6ab50d7f9e33593778ddd960ae2efb8dcc4d41ee. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:31:54Z), 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/UK2EF1300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb95a38e836788b2ebda9163d9faf37a3a6da279f5a7daa0a27199ef925192d9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/UK2EF1300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ecfadcbbd1782975c5ad3ea11dffdf52be7f6e0a233dacdda3b88183d7b80d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:04:54Z), 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/UK2EF1300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca052ac44f78ba54c3ebe09f1b9f4ab4dab382313299f90d606a9e3d3740d258. 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/UK2EF1300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42469afd25ae41e984ca295170343554798ea5875ea78591a8d24a0c00d49cc1. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/UK2EF1300003.
Virginia State Epileptic Colony - Fuck Buttons Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc8cd39a5d336bfae58d8f58fcec55479f9d2d80e4e440cfe8a23b7c3829b8b2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBARL0900637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffb69f7579ee27625545f2b35ea494ef7bdf2527a7e023c0b193b515f358948. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UK9LA1400107.