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 0xfab4bfd34cc315c09da1d513796c9a2a4abcda0e35251cdd5705f40bc8fd8709. Chain 2 (Bitcoin): anchored in block 953985 (2026-06-16T18:03:53Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d6fc5af-3c88-4b7b-b2d5-fbc84613dabc.json and https://artists.proofprofile.net/proofs/artist/2d6fc5af-3c88-4b7b-b2d5-fbc84613dabc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pergolesi: Messa in Re Maggiore & Mottetto "Dignas laudes resonemus"
Symphonia a 2 violini in D Major: II. 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 0x0cd49b3ccc19ca07f5e73bc124114170e9433cbcd36b03c7a63d26f2fb60d640. 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/FRZ132315020.
Symphonia a 2 violini in D Major: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327035617ede81a16b029887f33ff245d004bca8e5ca7964390e6d91f5ba36f9. 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/FRZ132315030.
In tribulationibus, in angustiis: No. 2, Aria, "Ad montem venite"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87354f5cae8c873394a5ad3d5da9bb4d69f670da5c0bac0d911b2f76880eb661. 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/FRZ132315070.
Exultate in Deo fideles: No. 2, Haec sunt munera divina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7029747619ec8bbfa84592e49a719373517973d9d0b6f99917017638ff1aa66. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ132315140.
Sistite sidera, coeli motus otiamini: No. 6, Aria, "Praestet tellus encomia florum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcaa31242ef93f5d0455d9736456ef5a33fe5f005f80942feb9e3a28d29bece. 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/FRZ132315250.
In tribulationibus, in angustiis: No. 3, Ad floridum montem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca77ead1bd07f4b9ff92a24222ec742b95e33bd3f3013db2c2440de9588185e. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FRZ132315080.
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
In tribulationibus, in angustiis: No. 5, O mons delitiarum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a744d974d6fe3a71a716b7d5afafe67c3bf808db02ed101ef9fa98faee3aa2e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRZ132315100.
Martini: Musiche per il triduo in onore del beato Giuseppe da Copertino (Live)
La principessa fedele: Aria: Troppo è timido il tuo core
Paradigma Medioevo: Music from 14h-century Italy
Melani: L'empio punito (Excerpts) [Live]