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 0x06462e31761796cf12135ad06dc39895738b8e220208842ea3d145b5daac9e58. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/45db12c5-f9c6-4b3c-95e5-122db7d155a6.json and https://artists.proofprofile.net/proofs/artist/45db12c5-f9c6-4b3c-95e5-122db7d155a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
This Is the Blues, Vol. 4 (feat. The Harlem Harfats) [Mono Version]
It's Hard to Go Through Life Alone - Original Mix
It's Hard to Go Through Life Alone (Original Mix)
Top 30 Classics - The Very Best of Rosetta Howard
Red Allen and the Blues Singers, Vol. 1 (Original Recordings 1938 - 1940)
Good Morning Little Schoolgirl (Blues People 1936 - 1937)
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 0x8137c1f269fd39a49f5327092cd8778c02118a61840a72ad3e06562f9028d73c. 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/FR10S1583689.