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 0xe580b87f6d4f90ebe21abb043315bfe47b34dd70a25f273d637b8b0bb2d1de38. Chain 2 (Bitcoin): anchored in block 954659 (2026-06-21T06:14:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ddda6076-94c8-4e67-baf2-34b964c3f8b9.json and https://artists.proofprofile.net/proofs/artist/ddda6076-94c8-4e67-baf2-34b964c3f8b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
2012 New York State School Music Association (NYSSMA): All-State Mixed Chorus & All-State Women's Chorus
2016 New York State School Music Association (NYSSMA): All-State Mixed Chorus & All-State Women's Chorus (Live)
2018 New York State School Music Association: All-State Mixed Chorus & All-State Women's Chorus (Live)
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 0x52fdf50106106ef47b08b44af0a3310a7449eb5e3f5cdd67ba2e82067d55929e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USVZX1906004.
Let the River Run (Arr. C. H. Johnson for Mixed Chorus, Piano & Percussion) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1656edf1164fca49a4a89b6616f16bac1f11923746b592b349b264fa804d8c4f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USVZX1906008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92e9d46b9f8a263818b1e2de064267f7166a0f1a55ac338797f1fada7a62d02c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USVZX1906006.
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
Way Over in Beulah Lan' (Arr. S. V. Gibbs for Mixed Chorus) [Live]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b8a938632f441e9cbad0c209461060353a2f050c3a842d8e737ecd67673664. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USVZX1906007.
New York State School Music Association: 2021 All-State Concerts - All-State Mixed Chorus (Live)