Chorus of the National Academy of Saint Cecilia
{"copyright_id":"0xc951c7eb6bdcd0a924b2fa064e0128fcc978d7f62f027a43ee140a2e7091764b","name":"Chorus of the National Academy of Saint Cecilia","registered_at":"2026-06-20T07:17:14Z","symbol":"NIM1550885","token_address":"0x0b6d00702cbf23e03aaeebac2d83adb0b81d2710","type":"artist","uuid":"a4ed28c1-577b-41c8-bac1-16f028b1b274"}
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 0xc951c7eb6bdcd0a924b2fa064e0128fcc978d7f62f027a43ee140a2e7091764b. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4ed28c1-577b-41c8-bac1-16f028b1b274.json and https://artists.proofprofile.net/proofs/artist/a4ed28c1-577b-41c8-bac1-16f028b1b274.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Orchestra of the National Academy of Saint Cecilia
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 0x8b54e6100e1c01f35f3541f334a110d916f5899bb56158c3a0b1f2dc019e6698. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEA809207100.
Verdi : Il Trovatore : Act 2 "Vedi! le fosche" [Chorus] - 'Anvil Chorus'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc0ab94939b546685f5ab4978450436cc00628874c70ec492cf134a8d6f434f. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/DEA800115647.
Verdi: Nabucco, Act 3: "Va pensiero", 'Chorus of the Hebrew slaves' (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b54e6100e1c01f35f3541f334a110d916f5899bb56158c3a0b1f2dc019e6698. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/DEA809207100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc0ab94939b546685f5ab4978450436cc00628874c70ec492cf134a8d6f434f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DEA800115647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc0ab94939b546685f5ab4978450436cc00628874c70ec492cf134a8d6f434f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEA800115647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b54e6100e1c01f35f3541f334a110d916f5899bb56158c3a0b1f2dc019e6698. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEA809207100.