Frank Noah Proffitt (June 1, 1913 – November 24, 1965) was an Appalachian Old-time banjo player and ballad singer known for his role in the preservation and popularization of the folk song "Tom Dooley
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 0x7f184d0db3b235570cc0ff173e8e91f5f1f0c767217f54b49d99e3209a78a66d. 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/d28de2a3-9467-48b1-a41a-73011e5a4aae.json and https://artists.proofprofile.net/proofs/artist/d28de2a3-9467-48b1-a41a-73011e5a4aae.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 0x1cec6d3772e6dbc96453c52b773a789ac2fc89f31fbb591aff870ac26e49174c. 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/USDYP1300080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a70ca78993eac1fce46fd552bf2785d190fada45695baf60ed66d3c1becf4fe. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/USDYP1300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ca369c217d62936f2c45c71a7a801a82b6f64ecf508be6a20cfc99b0cdfeec. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USDYP1300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a18d288ec05c2ddc471744fae40c93f3c9b77c1cf9b085449e11be2194b18e4. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USDYP1300087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0f69e6fcc490d69ccc1b47eeb7c6b05488afba1c2ed04f3300955fba474cc5. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USDYP1300088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e7b3eca42655fe931dae99942f19ba8d5daad7b7d547597eb0a62a673d648. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/USDYP1300092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17de9000be275d62b562d98273d793cff287e2c49b3779c05212fc5cf4999483. 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/USSF16236001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba71d85f09c97edb6b93b2ed30ebe69b3ee5e8ff8c4df4982078723149d3e99. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USSF16236002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7131e6a3e6bf75ec6da646deabfbfba1ed3b3f9cb90744be892be1b0ed96e39c. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USSF16236012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d66e0e94d818d5e12f384a9242899b0a81803acf342ecbab36c96a0e44121ea. 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/QMFMG1350568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6730611c8ffc8c487d59c2ad80cd066bb4b5bc206db9fdb9cb781cde3340b98. 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/QMFMG1350573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4828ecc9c26124175263e0708e4fe278c78893556eed79d53bdfadfee780673. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QMFMG1350574.
High Atmosphere: Ballads And Banjo Tunes From Virginia And North Carolina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2379b999a8219a50cc1679805f09dbcd4eb4e0f2e183afe918b1f6e6494672. 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/USRO27502805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19e132b4010a4dd8d10c39eca76df3ce552d8c9755329dc75e3eabecd95c33e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRO27502807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b486bdfaec3dd140762c98d4023bd0a9876a5fc29dd317c4755217487265fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USRO27502833.