thumb|The Ordway Center for the Performing Arts is the SPCO's principal concert venue. The Saint Paul Chamber Orchestra (SPCO) is an American chamber orchestra based in Saint Paul, Minnesota. Its prin
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 0x7955d9815a3daada05f3a4d4c90b16521d192b78480ead05271326792463be4a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d12bdb76-0430-46ce-ab20-1c8ae52bd445.json and https://artists.proofprofile.net/proofs/artist/d12bdb76-0430-46ce-ab20-1c8ae52bd445.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mozart For The Morning Commute - A Lively Bit Of Traveling Music
Respighi: Pini di Roma, Fontane di Roma, Feste Romane, Trittico botticciellano, Gli Uccelli & Antiche danze e arie
St. Paul's Suite, Op. 29 No. 2, H 118: 4. Finale (The Dargasson): Allegro
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 0x3ee5a4fa8e0828af281c330595912374b6772c20159c1a89440e886950e803fe. 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/GBF079210954.
Violin Concerto No. 2 in E, BWV 1042: 2. Adagio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf7bae355033079ee0e88790cd98eb083b29becd246985e2b24ecc39d21e43f. 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/NLA508600408.
Respighi: Gli uccelli, P. 154: II. La colomba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db96f809525c7cb5aae24e1fbe7c4dd97fbe76b5e0ad512525828dff40d5d3f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:07:58Z), 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/DEA809411302.