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 0x0059abdf25962cbdab2e68e9cbf041d3982c850edb49750bf7fcf9c79472c0de. Chain 2 (Bitcoin): anchored in block 954500 (2026-06-20T04:47:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9cfed484-5247-4b48-b135-d02da60e33a2.json and https://artists.proofprofile.net/proofs/artist/9cfed484-5247-4b48-b135-d02da60e33a2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La gazza ladra (The Thieving Magpie): Act I: Tanto sorridere (Ninetta)
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 0x4891a91ad54015f4924c8c596974fa47cc87564b0506d23224e9c092e37125d1. 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/ITN321113311.
La gazza ladra (The Thieving Magpie): Act I: Vieni fra queste braccia (Giannetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e3a4609eb2987e32db422f6310f2f11100e4587b72e09124f53d9812f3e2472. 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/ITN321113315.
La gazza ladra (The Thieving Magpie): Act I: Il mio piano e preparato (Il Podesta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb95840d28851bee2a5fedae79f8b95dd3a9784d7758f22c7395e9356a7af1c1. 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/ITN321113321.
La gazza ladra (The Thieving Magpie): Sinfonia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ab018e117abd3a34ac73f85d579ed51964c59adafc387113b230ae3d5a512f. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/ITN321113306.
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 gazza ladra (The Thieving Magpie): Act I: Oh che giorno fortunato (Chorus)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae32ea37efbbdcbc8ca531efd222b62f73599301d78b60df1079cc82a255c48. 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/ITN321113307.
La gazza ladra (The Thieving Magpie): Act I: Marmotte, che fate? (Lucia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853eea15c14603ef06bf0429f6b9ed39f56be1b6fa46ed5dadb6f65e693feb73. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/ITN321113308.
La gazza ladra (The Thieving Magpie): Act I: Oh cospetto! (Fabrizio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3abd74e18c4ff08920af38f9ce8baf6c8495fcfaf0641138ec22630a79f9ee8. 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/ITN321113309.
La gazza ladra (The Thieving Magpie): Act I: In casa di Messere (Il Podesta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415096c15c712a0a1d4ae3fa352fc8abede81e79fc9faf3b4b7c8f2616654abc. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITN321113328.
La gazza ladra (The Thieving Magpie): Act I: Di piacer mi balza il core (Ninetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575d4ccf97331be722a247c44510fcaa91ceb4d1786724c808a69100d8134bfc. 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/ITN321113310.
La gazza ladra (The Thieving Magpie): Act I: Alfin sei giunta, amabile Ninetta (Fabrizio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460522e821f6a5136c404e22e818754cf1ca0b4bace889d60759af8abcfaa24a. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ITN321113312.
La gazza ladra (The Thieving Magpie): Act I: Stringhe e ferri (Isacco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5cefa175d5e5af1316d67f2a9eafe9ffe965c67c53e7602f0447b85e3cdb09. 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/ITN321113313.
La gazza ladra (The Thieving Magpie): Act I: Ma qual suono! (Ninetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c7200762edc681322382455d16d1d5315b0332b29b5817f979e5cb5b297318. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITN321113314.
La gazza ladra (The Thieving Magpie): Act I: Tocchiamo, beviamo (Pippo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbab16c6949607bd5013900d11f1fb1d8506d1a3c11abb417d83dcd6c887734. 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/ITN321113316.
La gazza ladra (The Thieving Magpie): Act I: O madre, ancor non mi diceste (Giannetto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399e29bc94de16350f751edc11f6e78eb3c79cf1a12ccf05ce2c73672fb2f0ab. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITN321113317.
La gazza ladra (The Thieving Magpie): Act I: Per questo amplesso, o padre figlia (Ninetta, Fernando)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c3542c98be7407072d7d2ad5d33e97a6c61a7e8a81b6310fa727506197202b. 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/ITN321113319.
La gazza ladra (The Thieving Magpie): Act I: Deh, m'ascolta (Fernando)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5d294b24e6bf0d8b7cd17e3eab91135bfde920b4d0d24801970a7556994c86. 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/ITN321113320.
La gazza ladra (The Thieving Magpie): Act I: Si, si, Ninetta (Il Podesta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ece892a0a94f9d917754dace1e9d55ef37ad55e1adf5acaa0861a3ae7e6edf. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ITN321113322.
La gazza ladra (The Thieving Magpie): Act I: Respiro (Ninetta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e39532eb47f1adc71063db0e01636ee367c35b14d6283d579b259141ccdecf3. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/ITN321113324.