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 0x616cdf950a55df111d85ebdc136f02058a5d999b2f7c1d626701e4a0b9e3f1ea. Chain 2 (Bitcoin): anchored in block 953625 (2026-06-14T11:37:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/28996089-1c96-4be2-bf18-fddd4cf0daf3.json and https://artists.proofprofile.net/proofs/artist/28996089-1c96-4be2-bf18-fddd4cf0daf3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Napule, punto e basta, Vol. 3: Napule è 'na canzone
Napule, punto e basta, Vol. 1: I Grandi Successi di
Napule, punto e basta, Vol. 2: Lo Scugnizzo dei Quartieri - mezzo secolo di Canzoni Napoletane
Napule, punto e basta, Vol. 4: I Grandi Successi del Novecento Napoletano
Napule, punto e basta, Vol. 5: Artista acclamato al Madison Square Garden
Tarantella Luciana (Neapolitan Classic Songs)
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 0x547848fa867098c8bd488fb01cd191d5e8320f74e3f1e9cf735159e77395c1f6. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FRX871593213.
Antologia Sonora Della Canzone Napoletana, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32e15a6d3ed66913a64780723d694cdc41b00e903ee83feff3cff0f75291a41d. 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/ITG019803172.