Jeff Tyzik (born Jeff Tkazyik, August 1, 1951) is an American conductor, arranger, and trumpeter. He has recorded jazz albums as a soloist and arranged pop and jazz music for orchestras. Early life a
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 0xcb0e5480012d1fde9152a948ab4f7c0427e6ec544fad52a0a1b239eeba73d52e. 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/b998f92c-c686-4bcd-b70c-3e5aee99339c.json and https://artists.proofprofile.net/proofs/artist/b998f92c-c686-4bcd-b70c-3e5aee99339c.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 0x531e1bbdbdd23a4807dc0f5a823b661900fdfa9bf987b6ddc4c50154169108e7. 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/USAR48619013.
New York Cityscape (Version for Brass Quintet & Wind Band) [Excerpts]: IV. African Dance [Wall Street & East River Ca. 1709] [Live]
2019 Texas Music Educators Association (TMEA): University of North Texas Wind Symphony [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26737e3eb0449e61a947adb0895fd1e3d92f9d8ec1631f780100999814ae7db0. 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/USVZX1910210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8808763addf2ab7014c84bc03ffca8640621ea907afadb6f05283716f39e8caf. 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/USB8U1705805.
Gershwin: Piano Concerto in F; Rhapsody in Blue; Cuban Overture
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16ecbc2b186b8e1f5a5ac4ca0af332170ceecdc17f64456c8ce281d020ccd61. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM10644101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c4065b256ffd2ec0b751b41ad8722441604208ebef3ddfc214c5f02f979ded7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USHM10644102.
Piano Concerto in F Major: III. Allegro agitato
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac2ba11af0a4b1939bd2bf6f5b183742ade92af100bc3ef45de0cfb4d3253c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USHM10644103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576076edebc74e4af93a3057be4be0023bc165568049138327db3b333dd369f5. 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/USHM10644104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822a10eacbfa0f2c0b6658f277b2c8da93bb0b95c8dbf0cd61d9ec8b020be534. 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/USHM10644105.
New York Cityscape (Version for Brass Quintet & Wind Band) [Excerpts]: III. Traffic Jammin' [Times Square Day & Night] [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452b27e5842df6d0deddbf94e401c1c2ed441ef5302eeb1b84f165cd70e9f7c5. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USVZX1910209.
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
New York Cityscape (Version for Brass Quintet & Wind Band) [Excerpts]: V. Tarantella [Mulberry Street] [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51c8ebd5fe411d97a4711893f78cbfa235135691cc399b0eb24744c66c5a475. 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/USVZX1910211.
Cancer Blows: Thirty Trumpet Legends, One Moment in Time, Determined to Help Blow Cancer Away
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791b96a2a1fafeed3c2cbb0a37c7f07e7ef31cc5f4d1a765897ff3a6a97c9886. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USB8U1521017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10e9562eb72ac702cbc5ebe7bfa2f9fc39becdcf71279588d7552d35433dcf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USB8U1705810.