Benjamin Grosvenor (born 8 July 1992) is a British classical pianist. Education Grosvenor was born and brought up in Westcliff-on-Sea, Southend-on-Sea, Essex. He is the youngest of five brothers. H
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 0x7177086f7490c0d3aed946924c288f15450d485b472c310d79eda6f5f294ad3b. 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/e9722319-5869-4efe-8b06-66857772abd6.json and https://artists.proofprofile.net/proofs/artist/e9722319-5869-4efe-8b06-66857772abd6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Benjamin Grosvenor: Chopin, Liszt, Ravel
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 0x893bb3337b92708f9735bf831c4e588c70564e21f66fbe6984975c0379d70990. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:43:15Z), 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/GBBBA1100440.
Gaspard de la nuit, M. 55: No. 1, Ondine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4711e9fa84cd8e733a79114daea580346640e45fa75d4f4adadcb042f22a0d8. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:52:35Z), 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/GBBBA1100501.
Partita No. 4 in D Major, BWV 828: I. Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2880b95cebcb84d366675138c2fe79bc540723c8ad9a5ed9879ce2e4f6c098b8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBF071400371.
Partita No. 4 in D Major, BWV 828: II. Allemande
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19b34a45a338ef71622bc861b4cef1eba5bf3ff5def05fcf2ac04fb1a719e92c. 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/GBF071400372.
Andante spianato et Grande polonaise brillante, Op. 22: I. Andante spianato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f8068ed5b33c04e35447e88dca9fdd4970a8a897deaf729af348d1404677ea. 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/GBF071400391.
Andante spianato et Grande polonaise brillante, Op. 22: II. Grande Polonaise
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe118749b480a7a198d02f0bed4f4cce41f375be992c6d5bfea723d3c56fd52c4. 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/GBF071400392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0f9c3a2f7376e91afc610bd34ba20e141ee329c20f75dc0a3d66433c1fa516. 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/GBF071400440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c891b731da468feb3fe61313b1c57d0f856b48db018b5ff69dcda83d46040c. 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/GBF071400452.
Rhapsody In Blue: Saint-Säens, Ravel, Gershwin
Piano Concerto in G Major, M. 83: II. Adagio assai
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc5565f3cb660c101353f087c57850c17fd16a7d16dfbadd16e259a991db8b4. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/GBF071201882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1421a412233a7b6fe95215f76d18788c218fb64e8b21c3c0aa9860fc2c18337f. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:26:53Z), 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/GBBBC2201458.
Nocturne No. 19 in E Minor, Op. 72, No. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ff32a53828675f3446f843359bf842d58baf5ca01fdba1bb78a3f0ba72ddbd. 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/GBBBA1100450.
Variations on a Theme by Robert Schumann, Op. 20: Var. 3
The Echoes of Women - International Women's Day 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d66f5476327344ea6f19077f0f71622f8f00e7abf4465b94ec1ac5efb85b4e. 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/GBBBC2201479.
Variations on a Theme by Robert Schumann, Op. 20: Var. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163733fa929e7d768f64bdb7407f69c5b0113b09e3904f2cd61f9099154cf52b. 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/GBBBC2201477.
Variations on a Theme by Robert Schumann, Op. 20: Var. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12191e32e7a11cc3acbcfcefc1d10aff8bd0435b444c56cd1949c14b8f57ae5. 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/GBBBC2201482.
Variations on a Theme by Robert Schumann, Op. 20: Var. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427b9f530e633923463fcce4244694a9bf6e9a221659ca62b28e23e441794612. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/GBBBC2201483.
Piano Concerto No. 1 in E Minor, Op. 11: I. Allegro maestoso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d55875eeba764b81200f00e9d4f2dbf3eae9e3fc4ad712d3caaae18a381867. 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/GBBBC1900124.
Piano Concerto No. 1 in E Minor, Op. 11: II. Romance. Larghetto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb029e89ffb5da8d00334eb608d13a6e6520b203f660dea330352a1583e168421. 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/GBBBC1900125.
Piano Concerto No. 1 in E Minor, Op. 11: III. Rondo. Vivace
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff9d5f217193b9791ef13a1cc4ee688c00ff17360e28230d1af2eaa8586e819. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBBBC1900126.