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 0x1ca5d57aaa6758176e64e33eee80d4a66a973406a99756f8f4f53ba40f61de39. 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/736a2723-a8d7-44ae-ab03-5dcf06e0a044.json and https://artists.proofprofile.net/proofs/artist/736a2723-a8d7-44ae-ab03-5dcf06e0a044.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Carpeta Ahmad Jamal Trio Argo Sessions Vol.4 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.6 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.1 1956-1962
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 0x43e37d0dd0509423203ae06cc5bf5597dd7579fab53a7007dc6c8c4f7f669cbe. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:17Z), 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/BEDO61525158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3f71314dc70dd9b75ef2f4a419b865210d72ad00c56993df298fb19566373f. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:30:07Z), 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/BEDO61525166.
Carpeta Ahmad Jamal Trio Argo Sessions Vol.9 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.8 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.3 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.2 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.7 1956-1962
Carpeta Ahmad Jamal Trio Argo Sessions Vol.5 1956-1962