Craig Marvin Taborn (; born February 20, 1970) is an American pianist, organist, keyboardist and composer. He works solo and in bands, mostly playing various forms of jazz. He started playing piano an
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 0xda6168ddcccbabd9d5097f5a391e68ddf1412d203e71549b12022584920bba97. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9bb06165-c88c-4741-9368-f22df4634f24.json and https://artists.proofprofile.net/proofs/artist/9bb06165-c88c-4741-9368-f22df4634f24.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 0x7115204f4bea241271eca9e9f90ac495d7ffe5cc9e76669d0267564bf19fe7f3. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/USA6J0111102.
A Code With Spells (Live at Konzerthaus, Wien / 2020)
Now In Hope (Live at Konzerthaus, Wien / 2020)
Shadow Plays (Live at Konzerthaus, Wien / 2020)
The Epitaph Of Charlie Parker (The Funeral) - Vocal Version Of "Visa"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1c1570589733f639c48ffcebc7309c85cd6cec8b8e16413f34ca61ffd12687. 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/FRUM71700079.
So Long (Exodus To New York City) - Vocal Version Of "K.C. Blues"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae66420f861909bd29ee816a160d4073f278b78525dfd59c53d92be856ecadb. 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/FRUM71700081.
Meet Charlie Parker (Chan's Overture) - Vocal Version Of "Ornithology"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f97e20397907763c61cf58c44c46c5788152a8e2b1115200dfd3408e9ddcaf. 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/FRUM71700078.
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
Yardbird Suite (A Genius In His Youth) - Vocal Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb905b9883b321e42d4d63903692455f26338ad2eb488b59c6dfc447a6c755e34. 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/FRUM71700080.
Los Angeles (The Dealer's Song) - Vocal Version Of "Moose The Mooche"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dd5ae4887b6de947a5f9b669a84f75dddecda1636b4bd0454d316d4890f03c. 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/FRUM71700083.