Leonard Joseph Tristano (March 19, 1919 – November 18, 1978) was an American jazz pianist, composer, arranger, and teacher of jazz improvisation. Tristano studied for bachelor's and master's degrees
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 0x25592cbb433ee40019a102b2e5e8e6ffdc0b284f422bd1037233437dea461da4. 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/3ef652fd-afe6-403a-88cf-08831a4bba68.json and https://artists.proofprofile.net/proofs/artist/3ef652fd-afe6-403a-88cf-08831a4bba68.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 0x67b6d08d274e5e984e0b3a15b04bad5507d761bef82cab3c2993803a237247f3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBBLY0700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a536a683739901b4e1294aabff30bb0aa6cacdc1f02eb737b25550aaa64cb37. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBBLY0700023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4efa739b10c5207a61dd543aa929bb375d7ec1edd494db94ded2f6e5af3bac. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:15Z), 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/GBBLY0700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa681a42f59208af1662105e1af6ae8cddeceedd3c403ec0efaf6af993e98bda0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:46:54Z), 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/GBBLY0700026.
Lennie Tristano Quintet - Live at Birdland 1949
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf960a4b5881cad55634345d44478ecd0f423d956ebaec6619123c50692b885d. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:34:18Z), 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/US38Y2424535.
Lennie Tristano Quintet - Live In Toronto 1952
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30bbf5a3e0240e7a64a218444308c669166a794391c93027acdbf9e7754cac8. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USAT20103914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb693f7c1a6cb1a8694e0fa83ff96c0347ac557551f552fb0ce75cf2071274. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USAT20103917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9aef7a76db5f8cf87933f1a97afd1ffdc9e7609c15149bfc0a8938574dbefc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:11Z), 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/USAT20103910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58c1e4ea724ca5e69c340954434804b448424f9b81bbff6d20d0626bcd8b0f1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/USAT20103909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d9eeb479027574abfc1dab792e9b8a7ec048b6a9cff7115b06442cf9a873e9. 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/USAT20103911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d354addba5f0783f1254f683fa8c51f5b0ee8ce1c7e3d1f9e9f2d224b9b407. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USAT20103913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa457df4deb591ab26e63fed6091296d041f3f42eb124253165b7f8b371c4f2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/USAT20107229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11a913edd3d0fc3d8825fbe8852ff4446b062c9f87fc852790381ba548860d08. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/USAT20107227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x524aa3f21bb4e2cc1438bb345ddc10e0ad753f8862ddf8a086c3ef31578b610d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USBN29600524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bf5f4b73975558e09b884aa8851fbdb474e84558b0841e736a51dcba756d188. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USBN29600515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4c1e524361c17b158e47e4395f74b6cb0be4f68dc1bb4fbcec4b6a362279c2d. 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/USBN29600521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b27c26a50f5c282f0ea3d2389af111aa095cc8ddcbeb1a7c34a0654de6d6ef. 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/USBN29600523.
Tschaikovsky's Opus #42, Third Movement - Remastered
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70b699a86465f591962aba86f9a7cb31ea2b1cb1cfa4abb018819e5ad41f7fa. 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/USBN29600525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d189ca4220c59b09d198c78e36cfe4ecebd27d52b7b7c9fe286f60d70452196. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/USBN29600516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f341724e4bebd85d39e3f681c5d1aca30160ebe7c17e0d733a249f53a58dc22. 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/USBN29600522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf836de4c1fdc6219595d0ebf36b1ae073ce999f086109e27529d8976e276fb52. 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/USCA29600741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d2347ea27f77f3ff5e1bbd7b0561e16cdef8a238d6240fb28006ba16b82aab2. 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/USCA29200411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba065c3ca0e795f4b6880c479c6fae72b371bb2bb79658de4e9215ec6452226b. 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/USCA29600745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce6207a8dc78e736dffafbcf5f11885b140c0664b936f3b63948b64bf8674ff. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/USCA29600744.
Solos & Trios 1946-1947 (Jazz Archives No. 202)
The Definitive Lennie Tristano. Live in Copenhagen, New York & Berlin
Beyond Patina Jazz Masters: Lennie Tristano
Expressions: Lennie Tristano Live in Concert
All the Greatest Masterpieces (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51d087a7c4b5dcc7bba3c1eb03b087ad67cddef491fefb392a1b505028f673a. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:03:49Z), 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/DEA541302524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x082f93399fd28f54445923fdbe1c155b8058367bdbf2469daaac07d6b53bf58d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/QM2KL2000104.