Kirill Gerstein () (born 23 October 1979) is a Russian-American concert pianist. He is the sixth recipient of the Gilmore Artist Award. Born in the former Soviet Union, Gerstein is an American citizen
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 0x7b1f203cb0f26e3274bd2f04966b0d227050b669412341387deaa9577d946502. 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/1350e022-2457-485c-8289-b1a8e0e1cf43.json and https://artists.proofprofile.net/proofs/artist/1350e022-2457-485c-8289-b1a8e0e1cf43.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 0xd52521ef9640a8223f47dd3cedf9fcb5f823975bf5c490c60100fa0e3f7db99d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DELN21002001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d3efa8db4459042695f1644bc1cf69c5880d75f2066eea1ac0f754c40706b0. 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/DELN21002002.
Viola Sonata in B-Flat Major, Op. 36: III. Finale scherzando
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86182aa7bbb7392c8ad8f43fe510a97b66161c290dc90a77ff6e6fc339fed3fb. 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/DELN21002006.
Clarinet Sonata No. 2 in E-Flat Major, Op. 120 No. 2 (Arr. for Viola & Piano): I. Allegro amabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a8d0ab1c2371bf8e32c8325dbbecda279134bcbaa5e636cca8db57677dcc70. 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/DELN21002007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0626122077ce66276ef2059ef1c4fc07b5a6bd2bb2b88a91442a69cc09f28c4. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DELN21002003.
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
Viola Sonata in B-Flat Major, Op. 36: I. Maestoso - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5a6308637c5cfc42057c2d9633b043683e793643546b1f4c07936bcd3f0339. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DELN21002004.
Viola Sonata in B-Flat Major, Op. 36: II. Barcarolla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d481931c53af7f235d1c8c266cf84166ecce2987ab6dc2282d1abd4a4ffa7d. 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/DELN21002005.
Clarinet Sonata No. 2 in E-Flat Major, Op. 120 No. 2 (Arr. for Viola & Piano): II. Allegro appassionato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9f69ff2d8524e08b3264e9e7183f466ad7a19f81e2ea11c7d787a21a002ef2e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/DELN21002008.
Clarinet Sonata No. 2 in E-Flat Major, Op. 120 No. 2 (Arr. for Viola & Piano): III. Andante con moto - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f854bc862c2434b762d8200adb2e7da1768003a3cb1924e6149672adb4f76fc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DELN21002009.
Piano Concerto in C Major, Op. 39: I. Prologo e Introito. Allegro, dolce e solenne - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f44eee979e94a58bbab404be1cc4328533828b32431a2811e54b7f33aa6d862. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DELN21803001.
Piano Concerto in C Major, Op. 39: II. Pezzo giocoso. Vivacemente, ma senza fretta - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436a63c91ce9d4c8944b2969b95dc45023d57797b5c7a64dfad104ccd4ec9319. 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/DELN21803002.
Piano Concerto in C Major, Op. 39: III. Pezzo serioso - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fedcb29705a7dec5193381ea64b173a957c68b7ea6aeaff7866e2c25845e976. 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/DELN21803003.
Piano Concerto in C Major, Op. 39: IV. All Italiana. Tarantella - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d42186c09eff6d62dc2992c5916fbfd0cc4b3a1b0e9f12e0866e2552976377. 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/DELN21803004.
Piano Concerto in C Major, Op. 39: V. Cantico. Largamente - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3044e0259f73ee611f6c1bb8b9d3f3d54bc13133389f0c26590e5c8891d1ca2. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/DELN21803005.
Symphony No. 5, Op. 60: Prometheus: The Poem of Fire
Alexander Scriabin: Symphony No. 1, Op. 26 / Prometheus: The Poem of Fire, Op. 60
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c51ea424ac15e30332c8fdf4c09f6cad62c7200fda4178ad6bbff91ab9467fd. 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/NOEHX1814070.
Alexander Scriabin: Symphony No. 2, Op. 29 & Piano Concerto, Op. 20
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d59bff2c7712ce3b343a688bba017778ab78e999182fe91191394484830abf0. 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/NOEHX1721060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc83d47ebbcf938e38b2c645c5f5637e53c9ac6e829f054b5debf45504d006a66. 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/NOEHX1721070.
Piano Concerto, Op. 20: III. Allegro moderato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195f5a6121385d6d339b73133bc198f967a3a52b0805a1a5e82204f0d9ae3d17. 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/NOEHX1721080.