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 0x081d55e7e182d23779189e2681056d2ba86a34908214e768d57d1cf2dee6b7b8. Chain 2 (Bitcoin): anchored in block 954650 (2026-06-21T04:51:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d9d00449-1ee0-4bf9-9e7c-990257745194.json and https://artists.proofprofile.net/proofs/artist/d9d00449-1ee0-4bf9-9e7c-990257745194.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il pianto della Madonna (Live at Deauville, 2015)
All'imperio d'Amore: 6. La dipartita e amara a 4
Stravaganza d'Amore! The Birth of Opera at the Medici Court
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 0xd155107e319cc9160e0c65e566dd338878a0b1080cbe3b0b379854ef9b96bf75. 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/FR7JM1662060.
All'imperio d'Amore: 7. Ineffabile ardore a 6 "Il rapimento di Cefalo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbeaea7231554987ed715e29c933dec4b7409c70a03b11099b59409cc1a55a7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/FR7JM1662070.
Il Ballo degli reali Amanti: 37. O che nuovo miracolo a 5, a 3 "La Pellegrina"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d96a99ae9c7f4dce02ac3cc6f997e2a669dc9511aaab316565f7253661acae. 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/FR7JM1663370.
Matthäus-Passion, BWV 244, Seconda parte: Nr.38. Petrus aber saß draußen im Palast (Evangelista, Ancilla I & II, Petrus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f35ad94b5f6be4b38beb6ed92d6002954e3cd60b7ba2cde446b541c7b66acfb. 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/FR7JM2134090.
La Favolla d'Apollo: 18. Piangete, Ninfe "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785ddfa6231f59712dec1a01f353488626a5e16aa3e5ade97249250695939dd4. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/FR7JM1662180.
La Favolla d'Apollo: 13. Ohimè che vegg’io a 5 "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfcc27a69822c17348d2bcb34d994ba1e249ff2a0290fdd468ea151f92ad9c25. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/FR7JM1662130.
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
La Favolla d'Apollo: 21. Bella ninfa fuggitiva a 5 "La Dafne"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaec5eeff86d0be4d5c1da90bd0ef0cce7e97fb8a110b7e28eb0fa812d19adda. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FR7JM1662210.
La Favolla d'Apollo: 12. O qual risplende a 6 "La Pellegrina"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6856c50c6ffb15a6971ffdb6afb53ac890b54e7a9ff3239828cf3198895407d6. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR7JM1662120.
Le Lagrime d'Orfeo: 26. Cruda morte. Sospirate aure celesti "Euridice"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586da7713f3efe61e703161b54875de773684daa9bef9d9cc32299d37b29adee. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/FR7JM1663260.
Il Ballo degli reali Amanti: 36. Coppia gentil a 6 "La Pellegrina"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203003c101265c333d6ac67085d42d26c5a0883888db5329e5cd93ae29c782da. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR7JM1663360.
Misere mei Deus in C Minor - A 5 voci, con violini et basso continuo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8bfee25474eb47c496a49ce1183d7681b39f3f71a77a431aa5110c46b564e3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/FR9W12252911.
Responsori della Settimana Santa: Plange quasi virgo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd385e3d672eb47f255f4ed90fe03a10c6ebb7b594e2c49c687cb9c663cb3f17c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/FR9W12252912.