Michael Arthur LeDonne (born October 26, 1956) is an American jazz pianist, organist, composer, and educator. Having played with Benny Goodman, Milt Jackson, and Benny Golson in various stages of his
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 0x1e960f5227fd84ce72cb038628fd1c0ae11e2a8d35f699970f880e388179bea9. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/33bc1066-6a3b-4e16-a091-7856b1de323c.json and https://artists.proofprofile.net/proofs/artist/33bc1066-6a3b-4e16-a091-7856b1de323c.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 0x223e57dea67fbfd0a3b504e67bbd0dd5072203e414c55dd364049b00dc7bccd0. 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/QM6N22445467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720d11862984a8fc9ed67a522ee2baeeac0527a6c213ac04c96023dc499428be. 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/QM6N22445468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9781dcfe5a0bf0b1d9f4de9004daebc35d94a01c7a14830d402cc4a0dfb5ae1. 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/QM6N22445470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba77569bbcb6a93e43e7b7906b7151391780944850e3200aac045840bc7449a. 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/QM6N22445472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41464dd53f25a440a286a173e18fbaf37c755c0f5b50876b9418b9154f65742d. 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/QMFMF2302087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ab2f8bed4399b4077c555d0e3d8181accf63dbf16aa52d97575b2ab094504dd. 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/QMFMF2302088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc637539badfc0b2230e3a6b231bc91dd52df7901e3e589430641921e6415bd35. 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/CACK42207902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fadf5645c190af987231790acabdbbbfaafea040217dabd9f6b1105ef4e42f. 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/CACK42207903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d992967d950a6e46601a2fa299ed2a795f7f2e185b642b5ded51ebef4a50d1. 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/CACK42207909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194bc0ce5651286ce7b062ab933fba75786f363c72bf40e3e1b3c14a2c6fb581. 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/USSTR2118303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46cb641cdb219b2caa760c44ada5ee1fd98d6d7bb272d7454217b19fb2923b28. 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/USSTR2121830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9f9b2960ede1e1abbc224caed8e62157d1bd8770c990218aa5fd2bd8986daf3. 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/USSTR1816801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08146258eed4e8286c3c52adc0f280339a3da4ef44877e23257cfd8af015735a. 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/USSTR1816805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5f6898c9a7e07f2c765defa3cad2b9e33ae6f580229452b00bacb48ce5788c2. 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/USSTR1615901.
FiveLive (Recorded Live at Smoke Jazz & Supper Club)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62fadf5645c190af987231790acabdbbbfaafea040217dabd9f6b1105ef4e42f. 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/CACK42207903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f20fc4c428d532f524ddb935b81319ec0ed723c89fad9f766cef0cdaafb4f40. 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/NLGZ20902139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7233e914afe032375e0a6fc9c6ae2f3f2a6b8f489547255e4aa8ae4539e8d94. 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/NLGZ20902143.