Scott Tuma is a musician from Chicago who is best known for his live performances and also for having played guitar in the pioneering alt-country band Souled American. Since his departure from Souled
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 0xdf60d98b3b389100335be8d7feaf446050bab39ef168f01dea2acce9697f92cb. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e8e85bb-193f-4971-ac36-5aa200b60a0b.json and https://artists.proofprofile.net/proofs/artist/4e8e85bb-193f-4971-ac36-5aa200b60a0b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Hired Hands: a Tribute to Bruce Langhorne
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 0x4488bea17dcad20abcc1c4427965189bbbcb7047c12b92cc7709e0082e0ba564. Chain 2 (Bitcoin): anchored in block 960288 (2026-07-30T17:41:38Z), 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/USQY51621723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd2c5f6e741ff6c88f2f3fefc72277532b7d18eaf09e021530a392d05e68427. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USQY51621724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x966a6ba2f56b267d2cf4470311452b106a4120a7fb107fdc91fd5f3b5bf86da7. 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/USQY51621725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5994fac6f16c48d40f2063fbd216adbe54ab92fab842b0ea12eec87c8bd2492. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USQY51621726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1a2551e394f1b2fc147fa83e912d737c79a4891be14d4a8a52a6828497dd77. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USQY51621727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bf69045880013623299a632920eb2b368718cfe717a1d4c7620d18fbf3337d. 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/USQY51621729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d9d133c6ca5062eda21fbcc48985eb9b888661c4f3c1da5e46c473d0911aed. 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/USQY51621730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc317cb90af72c785beeb7bf204252128dd6f714443c662d640883f3054de90ec. 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/USQY51621731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c466aa2a25beebd8cda381f5f0f596614f34e152d2e128f454cc573508455b. 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/USQY51621737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e9023fdbb06cbdfc57521cc8d21d0889760c25ffe2b01856c1879c696d60003. 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/USCGH1061914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716789e0b5c50ea6aeb6c1ba5c1beb7e5625dc01329db483bc0f067304532d0f. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USCGH1061915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da74536d180033a772ab6b185c7b79aa035fd301529d0bbfd02443c962998fb. 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/USCGH1061916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b84ec45830aa79d27e5b4bd185af15a5990fa6abeb96bf5fad3d6a31cbaadb8. 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/USCGH1061917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887f757d47015f9533e2ee88af532156d555809875d30f7f68786fd6693b9cff. 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/USCGH1061918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652345e172170ac66abff6de7d6dbe6bbd9693a901cfec3cb571d9418bc82f35. 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/USCGH1061919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda28ec13fdaaea956b4a7954ad53f0d2cc5fd8c74d0778086f91172fbc47914. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/USCGH1061920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ca6962c7e176f328626f0633f951d1ad6da8945c738ce5705e1d0e497942f7. 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/USCGH1061921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d38f6f7bc5f1f897087ce04cc411bc87d6b0e47f46365ddd5c5961488965ee. 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/USCGH1061922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76b335e1b13f7ef9b6f1dfb26725a48aa4698910668eeb5f3fc49f6a45d560c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USA2P1431187.