thumb|Andrew Weatherall Two Lone Swordsmen were a British electronic music duo from London, consisting of Andrew Weatherall and Keith Tenniswood. History Formed by Andrew Weatherall and Keith Tennisw
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 0x83b24a1c9d7f0086c30b61bb3e5972bf64169a8e4157edd73784d7d777914916. 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/07867965-4767-4103-a41d-8a427d4fdb58.json and https://artists.proofprofile.net/proofs/artist/07867965-4767-4103-a41d-8a427d4fdb58.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Fifth Mission (Return to the Flightpath Estate)
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 0x45e5a74c52a735431144721bc1c676427d0e447f49a5752d64871ee817e10fe4. 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/GBCAC9600634.
Azzolini and the Branch Brothers Meet Being
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcfc95b1c5553df23eea50e8889cb1fb884b223d54fea704bf0f645fddd809f. 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/GBCAC9600607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65b2f943744edf583a05846787f5b548c9e0b665a4a731053b475f335cc8941. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBCAC9600624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6147616f56da1ad0c36daea98d19fe0f95cee28982f3e0d61bd19140f9e1b757. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBBPW9800095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e3b6b1744dc2346cea8b63ec0e1cfc77233eb90e6c96af23f088eabd331370. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/GBBPW9800096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298a9bec7b8fb2ca6c7e819c77e27ed6804cb2c4f0bc0d0874768f4d596a2624. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/GBBPW9800097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f24f141abe94c5dd80e1fceaa3db4cd2fb63114a5ef7ce0ad5b5963c060143. 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/GBBPW9800098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2768f7712a5b6734c4fd8b6a524b1cfca432eeed8641884daeb7cdf5b8bcd51. 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/GBBPW9800100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1a130e6fb18c9e37f1edd575be17b90dfd0094795dace155a2f83c1419221b. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBBPW9800101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ba774d465a5c34067d86d3ea0820d23ea80dfc08348a7e7728334a8e58e5b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBBPW0000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe994ff4067fbd499a33a289a374d3bdd2e54d37f333ec933a7935b839e37e4dd. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/GBBPW0000085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5970808c9e054195f775d833903ef754b724ab625d995272c264c691d679132a. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/GBBPW0000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631f2595ac5cc36d3ca74563f4bec8f0c0ce728beaad1b2dcc0b7643a478b5fc. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBBPW0000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4cf53646d84ec0fa637293fd0db58cf011d5186badfd03f7ed35fca2f74a6b. 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/GBBPW0000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9a4a607a47b290a237266f22dc12d64cc45ffa0d9fa33f91dc68d5c09e2a49. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/GBBPW0000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bfa931961cab2fc7691376472500e00c676fd3ceebe568066699e0d3d8d272. 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/GBBPW0000093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09fa3cc35589b93feb1c224bbb814ac7a18500eed05c1516134be0e6ebe787dc. 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/GBBPW0000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4a21318effdb764200b0dcb389ea2052c246151233e1c178363d431855f523. 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/GBBPW0000097.
It's Not The Worst I've Looked… Just The Most I've Ever Cared
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdf8b1c4113d26846140f92e714f4665d80f70eb7f48a679bf86854b0ae39d8. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBBPW0000099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f5fbfe863481ab17b8a49a8cffa9e0dcd773e9d6a8c62dabd10fcf30a6515dc. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBPW0100079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x516e93c2bb958a6dc680c5ea1ce5dc0d68c153934c76932272097fc797b932f3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBBPW0100087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb98eb0975fc6876584c3e2308d6eb00515069058ea90ad56f0c7189a11052f51. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBCAC2301092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40cd2ad7a6f7af2e22f2f4bd3dd44805ae2c233d4df83e1f8162c2c6a4cb0e30. 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/GBBPW0400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0bb1116746f4431605a96a54adc1bf6eb6141466729df196cd2ee2b88e515c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/GBBPW0400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af338d4bb3e6f392a5f0bf1a1b8e0b969d716936d2f36346891934e1bea37d2. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/GBCAC0700879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293a098f494a38df56e4f8c21ac71d4bed8c10c12da3c9ba01ae3ae3ca0afd98. 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/GBCAC0700882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9890ea5e8030bdf825532a999d6d22b832321a783df1dde00368c8488b7923f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:00:42Z), 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/GBCAC0700873.
It´s Not The Worst I´ve Looked - Lali Puna Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6dc8d36f6f249dbaa5dd336a5f786bd7e5965a81baa4769c99833ff7ebef2f. 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/DEX260505603.