General Sir Antony Kenneth Frederick Walker, (16 May 1934 – 13 October 2023) was a British Army officer who served as Commandant of the Royal College of Defence Studies from 1990 to 1992. Biography
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 0x3116792c8cb5a3032cea8100d6c05bf7f70f65c1931ebaf00c55b6cedc34d7fe. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0437cbe3-1a6f-483c-b775-5c5e744c7130.json and https://artists.proofprofile.net/proofs/artist/0437cbe3-1a6f-483c-b775-5c5e744c7130.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Brandenburg Concerto No. 3 in G Major, BWV 1048: 1. Allegro
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 0xcf7e3f366c2c3947f2739bab57d737949591eb856da3c4441573b40c3ec3cc97. 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/AUAB00750703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ac22810c046345b02192c62a920c3042f76d8bc3ea393049d7eb6366947489. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AUAB00250318.
Partita for Violin Solo No.3 in E, BWV 1006: 3. Gavotte en Rondeau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e94183f522ca700e5a83a514dcd492b75982e6de9764a551d5eefa480aac45b. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/AUAB00550932.
St. Matthew Passion, BWV 244 / Part Two: "Mache dich, mein Herze, rein"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3dbdb450a4b55e042422d7ac09aad155c9541b9ea08027f84b2334a82d07968. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/AUAB00450330.
St. Matthew Passion, BWV 244 / Part Two: 44. Choral: Befiehl du deine Wege
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a4828cfa9321eb796d2cff00e76a835a5e4c9aa66b9972114b7390aba4eaeb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUAB00250035.
Mass in B Minor, BWV 232 / Kyrie: 1b. Christe eleison
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb86951cf31c952bed0d483a2ce94aa35e3bdaecab1ffcef39d80df707500d59c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/AUAB00350303.
Magnificat in D Major, BWV 243: 1. Magnificat anima mea Dominum - Live At The Sydney Opera House, 1999
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6b448008a0d03e021abd60f0a1bf1614abb5a7fe2c1d66d9a683f3b202e1f0. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/AUAB00150060.
Was mir behagt, ist nur die muntre Jagd, Cantata BWV 208: 9. Schafe können sicher weiden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdf1ee2f4afed1b28728f33771a60a371abb8977079e4057c31adcb49f1dbb0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUAB00350300.
Suite for Solo Cello No. 1 in G Major, BWV 1007: 1. Prélude
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4041865f8cc05a404bea9a05a53c987d2c121b52101a223ba3ff86d1993c2a7. 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/AUAB01150671.
Brandenburg Concerto No. 6 in B flat, BWV 1051: 2. Adagio ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2feb371fef6bf0f0bd9eecd6085d05e08f9b3f0147cffdec7018a1b6c3273d9. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/AUAB01150663.
Wachet auf, ruft uns die Stimme Cantata, BWV 140: 4. Zion hört die Wächter singen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c05e95ae86e94ff4c234b2541efd7aa7d49a021474bcf248bd461df173104d. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/AUAB00750164.
Orchestral Suite No.3 in D major, BWV 1068: 2. Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd90b8900bda9c10d89ce061d39faa3ff303d0c34a8d2a601f4cf506003226e. 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/AUAB00050522.
Violin Concerto No.2 in E, BWV 1042: 3. Allegro assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d4a8eb847f3f9f265f84673503ec3cf8eb07ec3f66cd0611a78f5ad5c7da213. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/AUAB00650509.
Herz und Mund und Tat und Leben, Cantata BWV 147: 10. "Jesus bleibet meine Freude"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be45cc880c36a52423b5bee52cce5eef0b7b543076f001617687b07adb63e1d. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/AUAB00750163.
Concerto for Violin and Strings in F, Op.8, No.3, R.293 "L'autunno": 3. Allegro (La caccia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c5096dede192bedaf72f2fba285379198e802d9613cc48f2428a5993675c89. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUAB09750059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319eeb6e43ac9344e8c58d5ec0fedff510b95ed9cdf2e083ea261cc37eaf0923. 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/AUAB00250015.
Violin Concerto In E Minor, Op.64, MWV O14: 3. Allegretto non troppo - Allegro molto vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f288ec6dbc71b02186241e46fe6b75516779fb106972917bb0f88bc2341b1d. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/AUAB00650244.
The Gadfly Suite, Op. 97a: 8. Romance (Arr. by Lev Atovmyan) - From "The Gadfly"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cce2929283f14f5d4047c7d0bfee668872d7e50d21f843c9a37828af536412. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AUAB00250025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x402d2d1e4553139a653939513c00760c0491c79fa7b6fca55363becea883ecb9. 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/AUAB00750721.
Concerto for 2 Violins in D Minor, BWV 1043: 2. Largo ma non tanto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd396ae18bb25058e47dc74018f117c3aaa581506a1b65925d705c92e55226f1e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/AUAB00650514.
Concerto for Strings and Continuo in G, R.151 Concerto alla Rustica: 1. Presto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa9b6c18735bcb932b80b9d61c25dc6318d25db06857332387aed54ca438ad3. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUAB00550780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x815df9fc0ce1d5139f418481d9828794c6cc088c2c2065f32b41ae4fd1f2d0b9. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/AUAB01250001.
The Nutcracker, Op. 71, TH 14 / Act 2: No. 14c Pas de deux: Variation II (Dance of the Sugar-Plum Fairy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f805f5f96274b74289452d244e4288cfc247fb5d9036d2bb0cbc1b9074e90b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/AUAB01650670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43ee9574d033d9a7cafd6b14845fe57e5efdd1455a3d39e5ec14502899eb9b7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/AUAB00750348.
An der schönen blauen Donau, Op.314: Waltz, Op. 314 "On the Beautiful Blue Danube" - Excerpt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b99fb0b00d7d080d575cdf6bb572d49741d3a762e2c5a8485b05b3b5325e58a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AUAB01750576.