Leon George Thomas III (born August 1, 1993) is an American singer, songwriter, musician, record producer and actor. He began his career as a child actor on Broadway, appearing in the musicals The Lio
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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ac90a83fd6375ef7f75d5b5f8834d3b43a27a9de93abee4de3849bb7fc844e. 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/eff14748-6975-4882-a4ff-7a562c6e77d7.json and https://artists.proofprofile.net/proofs/artist/eff14748-6975-4882-a4ff-7a562c6e77d7.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c8ed489ad71ae86da0feab748666a62ce3935039c7b1b201c3520c1de95ef5. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/USBB10100987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f8e04e909eab8df764303eae4f7df4540d4bc77f7843f1cfeb3f389ef30f76. 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/USBB10100988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8361ef7fb614d7820b7bd6112ab8ef52eea3da03316b915958bd6d0851e9dd13. 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/USBB10100989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5071391d2def9be9b44a4d131a32f46132b46f63d9309dc7e1883a31e234d0be. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USBB10100993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff947c5179e4ab9f006b78c14a397706a983f77fbbf36a6c029066f55a328eb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USRC17208324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91534837d187f2cf70c5478db0a7983e89a1d3a12d00b413d231972304ae506. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USBB10100972.
Precious Energy (feat. Eddie Henderson) [Live at Ethell's]
The Creator 1969-1973: The Best Of The Flying Dutchman Masters
The Creator 1969-1973: The Best of the Flying Dutchman Masters
Cowrie Charms (feat. Leon Thomas and Barbara Hicks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a6b730ac97df53512432c8794609be27ad9cb4c9522388ab7bb982642337ce. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAYE2300263.
Liberation Music: Spiritual Jazz and the Art of Protest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1618e6520d1d0297ccc98ab3eb2779d5eff357886070dcc18221a0222e3bb4c9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USBB10200369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f8e04e909eab8df764303eae4f7df4540d4bc77f7843f1cfeb3f389ef30f76. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/USBB10100988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f09c8ca4c4cb5abb79799b1441eac9e8b003f61fba0730a0e4f53d264f3f267. 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/USLNH0505604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7b8fe330539939b1bc87d7bbe3c92999005979b12f8e38f90977c9738ebd4c. 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/CAJ229815330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91534837d187f2cf70c5478db0a7983e89a1d3a12d00b413d231972304ae506. 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/USBB10100972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7af6c076e22abbfb3ba19fe8bcd26cc241491bd39c0bcead7d6d4879c473fe9. 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/USLD91714806.
Aimless (feat. Lexii Alijai & Leon Thomas)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f1c2846408521f46035d6da5eb06dfc9383307b814e983b59906187ac172a0. 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/USLD91714690.