Yuval Yaron (; born 1953 in Petah Tikva, Israel)Perez, Jennifer Anne: Violinist Rediscovers Jewish Heritage Through Song , Chabad.org, July 23, 2007. is an Israel-born violinist living in the United S
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 0xcdf73784964ebc707346e3787c20719626986069ca89dc2fdbd7c8a3dd0c5c64. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9e2916a-2cd2-496c-a134-b71b0439ce73.json and https://artists.proofprofile.net/proofs/artist/f9e2916a-2cd2-496c-a134-b71b0439ce73.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Mozart: Symphony No. 1 and 32 / Sibelius: Violin Concerto, Op. 47
Violin Partita No. 2 in D Minor, BWV 1004: 4. Gigue
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 0x53b1e848722b27149df248ccbd0d90c8e0f0aaa8884089e9bbc2ef7f8f5b0e59. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ078903340 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b1e848722b27149df248ccbd0d90c8e0f0aaa8884089e9bbc2ef7f8f5b0e59. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ078903340 — a six-check JSON result.
Violin Partita No. 3 in E Major, BWV 1006: 5. Bourrée
"A Classical Concert": Baroque Composers
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46422aab1c8ea494a01351b78bc440532b1048198d420845b5d9c9830b1df33. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRZ078903460 — a six-check JSON result.