Fulton Allen (July 10, 1904 – February 13, 1941), known as Blind Boy Fuller, was an American blues guitarist and singer. Fuller was one of the most popular of the recorded Piedmont blues artists, alo
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 0x7677cafc961378c909de4bc654a90990467e4e0e739e941e0ca592964d72c100. 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/f83218a3-eda3-48c8-a339-e2d09787e75d.json and https://artists.proofprofile.net/proofs/artist/f83218a3-eda3-48c8-a339-e2d09787e75d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blind Boy Fuller, A very popular American blues guitarist
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 0x6d3555725ce824222bc61adf7d3ea7a296b620e23be31309c56634f550ca983b. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:08Z), 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/DEXO52475349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e79277654c5eadb1bb8b164f57dee514ac9b84bed93e461a031dd80cc35383. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEXO52475354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179da845bc622810794715fa52b1128537600b792faed12f2a934ccf6b22bdcf. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:17:47Z), 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/DEXO52475412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x005918a9cbbe03cfc873d198a79c3c11d33cc988ddfd315754adb94917a52fa9. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:33Z), 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/DEXN92266141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1dc75ab6e44be8fcf080c1165ee66eec699441f1a5d2a0ecdcc6dc5530fc90. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:04:50Z), 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/USSM10111501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa8a0f3b3dfc55d57ed97c74383b3035cfb378dca502f7684ba35a594376d5f. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:49:54Z), 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/USSM10111506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5593a7b3693c94c824b26bd16507b5d9a528009d81fef54abb5ed0edce48d8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USSM10111511.
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