1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x461a5066f77bf1ac7c2da1ae687ee3482115b4408f8cbee360bd7070d06c205b. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9ac1e52-7e89-49cc-8d1f-8c011c19ad1c.json and https://artists.proofprofile.net/proofs/artist/e9ac1e52-7e89-49cc-8d1f-8c011c19ad1c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Gambler's Blues (St. James Infirmary Blues)
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 → block OTSBitcoinBlock must exist at that height 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 0xcdb1bc75f077d903a8963742b9567c0aa3a953cfc1747ed577d1597e789d76db. 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/USBS90503606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1223b354f4842dafa903ef776dd5f4dfb225d2df73d9f54bace7c940c7c39e41. 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/USBS90503620.
Top 65 Classics - The Very Best of The Hokum Boys
It Started in the Garden of Eden - Version 1
It Started in the Garden of Eden - Version 2
The Voice Of The Blues: Bottleneck Guitar Masterpieces
Roots N' Blues: The Retrospective: 1925-1950, Vol. Two
Elevator Papa, Switchboard Mama (Risque Songs 1920's-1950's)
Please Warm My Weiner: Old Time Hokum Blues