PRISMA may refer to: Preferred Reporting Items for Systematic Reviews and Meta-Analyses, an academic reporting standard PRISMA (spacecraft), an Italian Space Agency mission
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 0x7cc2935e33388649af85eee951d5c98e34a771d6beada3e9f5d6caea803c7205. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/60f8e409-860e-469c-bffe-fd691766d339.json and https://artists.proofprofile.net/proofs/artist/60f8e409-860e-469c-bffe-fd691766d339.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ciaccona: Variations (Arranged by Franciska Anna Hajdu and Dávid Budai)
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 0x6a9f24bab9805c7a0fea225f7719f3f8aedf5609b5f32a1a7ab1f1ffc323a943. 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/FRZDG1801306.
In the Streets of London: A 17th Century Musical Pub Tour
The Division Violin & The Dancing Master: The New Hornpipe / Johnny, Cock Up thy Beaver / Newcastle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cfbd6f89b7c0596a03e1e3362ebbfe0ff0b91cf76f0a0b80f4a9835e3e4c2f. 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/BER182281401.
Trip It Upstairs / My Wife Is a Wanton Wee Thing / 9th of July / Dusty Windowsills
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb64e8001d5959301c4fa913e6cc1318a5c6c8003e5198b7eba39396e57fd66. 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/BER182281402.
The Dancing Master: Drive the Cold Winter Away
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08c8ed65c0ff8e7d36df97472e9af08331566a8c28663aa8a06da244f3b13407. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BER182281419.