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 0x83d40ae335402f3068a4afe9fca1f664188804754fb1a67de2541e1c5c4303a6. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/96ada65f-7e47-4222-bd3b-dcd594ece606.json and https://artists.proofprofile.net/proofs/artist/96ada65f-7e47-4222-bd3b-dcd594ece606.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Il Giustino, RV 717, Act I, Scene 2: Vitaliano, il di cui nome vola (Arianna, Anastasio, Amanzio, Polidarte)
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 0x987770815713ee7af3f099d4472ed500ef66c1a5a70507fad06012a6f043fdc0. 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/FRZ131811070.
Il Giustino, RV 717, Act I, Scene 8: Io t’offro, o Augusta (Arianna, Anastasio, Andronico)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c7624f2cb82bdde5174e19c339dda84521919305b79d492e7e7824bd2d7e07. 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/FRZ131811210.
Il Giustino, RV 717, Act I, Scene 8: Già s’avanza la notte, e le nemiche schiere d’uopo è assalir (Anastasio, Amanzio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7600700bc8aac10813b77b854665525f5ab29152838c4c9e9d2d0648ad491c56. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FRZ131811230.
Il Giustino, RV 717, Act I, Scene 10: Del greco impero ai danni (Leocasta, Anastasio, Giustino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf684a8f3f60dcbbfea1b6ee8886ae5b54e32aadd4dab04c73d99a9ed031b58a6. 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/FRZ131811280.
Il Giustino, RV 717, Act II, Scene 1: Al dispetto dell’onde pur calchiam queste arene (Giustino, Anastasio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2ac2212ca22ee143b3979c39580f8809e61541299753403354b9c52903366e. 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/FRZ131811380.
Il Giustino, RV 717, Act I, Scene 8: Vedrò con mio diletto (Anastasio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d648966c3dc09f2a66b7489effab2895f70478efc176563fc889a400007b99f. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/FRZ131811260.
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
Il Giustino, RV 717, Act I, Scene 1: Febo, che non mai stanco (Arianna, Anastasio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb51cf4e9fabe547430d30ac18a5f317189464c364bd2ecb03a9c545503dd86. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/FRZ131811040.
Il Giustino, RV 717, Act II, Scene 1: Sento in seno ch’in pioggia di lagrime (Anastasio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a32cef2d4c858e88a96bed8e62e4c8d74e53feeea911ed7a80e3bafb8b0ca37. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRZ131811390.
Il Giustino, RV 717, Act I, Scene 1: Viva Arianna, e il suo bel core (Anastasio, Coro)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bec2e2507e83758fc580969338b62dd59cba89cbc546d6759d262319061369d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/FRZ131811050.
Il Giustino, RV 717, Act I, Scene 1: Ah, mio sovrano Augusto (Arianna, Anastasio, Amanzio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ae8874f9983c7c3670d72ecd5f4b31903de89387032f413eb35807a4ce8722. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/FRZ131811060.
Il Giustino, RV 717, Act I, Scene 2: Un vostro sguardo (Anastasio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32334b7898cfb4ae89fe6d56ae1fce0056e158e1dd79f90cb7fe669086cf642b. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FRZ131811080.
Il Giustino, RV 717, Act II, Scene 4: Mio bel tesoro, mia dolce speme (Arianna, Anastasio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c64526c7ef016f76249b9358c66829517719b0c0b88abc3f48f9ee56228791e. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/FRZ131811440.
Il Giustino, RV 717, Act II, Scene 4: Ma quale orrendo e formidabil mostro colà estinto rimiro? (Arianna, Anastasio, Giustino)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d48019cd5058252e89a9332bc40a98bf974afdb6ae4a652874ceeb29a8df78e. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/FRZ131811450.
Il Giustino, RV 717, Act II, Scene 5: In traccia de’ tuoi legni (Arianna, Anastasio, Amanzio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebc5d5475c87a4e68a83e76eb05d338d93e7b5babda8c4fca289058e801be24. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/FRZ131811460.