Hezekiah Leroy Gordon Smith (August 14, 1909 – September 25, 1967), better known as Stuff Smith, was an American jazz violinist. He is well known for the song "If You're a Viper" (the original title
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 0x7bbc5c5c54560284beae9e6b259ea1969b0b747a8a08953b2ec5ed1eb5622e0d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ba6e0470-0edc-4beb-94b4-a675eb3b6018.json and https://artists.proofprofile.net/proofs/artist/ba6e0470-0edc-4beb-94b4-a675eb3b6018.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 0x82a44f3a012f2554e492c6dbc8e00c50f03244b9878cc32e4e2d642933460dac. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:38:54Z), 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/DEXO52490030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2f9844562b9d8ca5e7808082496d8a0bd6a75ce6969adf8c23fca7229220e5. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/DEZZ42171893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14980c55f896f4fc62cf91e8c049bfa5caf15c975dbd4127fe3996c787519bf5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USPR35700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a318f0ab5d18fd37a9254e565b55a3c74f642208e468f2c5699d93c5cac59c8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USPR35700039.
Stuff Smith/ Dizzy Gillespie/ Oscar Peterson
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14980c55f896f4fc62cf91e8c049bfa5caf15c975dbd4127fe3996c787519bf5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USPR35700037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a318f0ab5d18fd37a9254e565b55a3c74f642208e468f2c5699d93c5cac59c8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/USPR35700039.
With The Henry Chaix Trio: Late Woman Blues
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d1dbe7d4f2bc2d374355c41b3cad1b2a82851c002b2b0a91e79e435eacc491. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/USA560980589.
Preeminent Violinist of the Swing Era (Remastered)
Hot Fiddle Swing - Stuff Smith in Action
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0476f2d420445a152a3a60d3eabc486a3cecfa91a41de522fc834bfdf4dc0cde. 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/QMBZ91932426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe74dfaed9d63acfb643779864ca6aa1ad50255fb23017e26a9200ab77e7a4. 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/QMBZ91932427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e132fd2412cc7c3915b4a537c4804f776b6b3d4f0ee706223ea781016ebbbb5. 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/QMBZ91932429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493222bdce34cca24303f612ffe5c7634ad993dc5aefa161215ce4986a02916c. 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/ATE611700007.
Electro Swing Party by Bart&Baker, Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1525c0da1a661247546a7efda3314b356e66b27819e7fb6f514217e1ed70c06. 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/GBJCN1812501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1525c0da1a661247546a7efda3314b356e66b27819e7fb6f514217e1ed70c06. 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/GBJCN1812501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x729197ba21b00fbdbc4fdb6ae981cb2b988f0d4fb73d15d0c5f327da56648a3a. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMBZ91932419.
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 0x5f22e2bd16e524dd8217fb886e71cc833a0b6e6a22d2572690fa70e89e1e1015. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QMBZ91932424.