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 0x749c6d4948314a4392b9370556c26c3d5384e02d587852af1be6d61c76d3d39b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/afa7fb63-ae91-4083-84f4-ccd7e2a6589a.json and https://artists.proofprofile.net/proofs/artist/afa7fb63-ae91-4083-84f4-ccd7e2a6589a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'incoronazione di Poppea, SV 308: Sinfonia
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 0xd231874ca85a4b7de638e6fc991528897899a51c932b6512853b5a8643bdfcdb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ES7891000601.
L'incoronazione di Poppea, SV 308: Prologue: Amore: Deh, nasconditi, oh Virtu (Fortuna, Virtu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34ffd98f83c92dcc7048f0cac33879c9111618185596e5404b0cc402e478d60. 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/ES7891000602.
L'incoronazione di Poppea, SV 308: Act I Scene 3: Signor, deh, non partire! (Poppea, Nerone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f7c0428e1ddc3d279b66348c9dc3c5f8ccc59d3c3d54979d4bc3e0f2e1816a. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/ES7891000605.
L'incoronazione di Poppea, SV 308: Act I Scene 9: Son risoluto, insomma (Nerone, Seneca)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf040f431bb0b52b6bb1a63153997ecc23107978b66da1535f1580fbeea085df0. 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/ES7891000610.
L'incoronazione di Poppea, SV 308: Act III Scene 8: Finale: Pur ti miro (Poppea, Nerone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd93fed85127d8cfa4b20aa51d0cbf9fb96cfac1674f64668022347e2e0af14. 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/ES7891000632.
L'incoronazione di Poppea, SV 308: Act I Scene 1: E pure io tonrno qui, qual linea al centro (Fortuna)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6cc2c3c0bd57cc49f7e5d500314c9e9f6ab8df9a66931feab7d800a059a47a8. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES7891000603.
L'incoronazione di Poppea, SV 308: Act I Scene 2: Chi parla? Chi parla? (Ottone, Soldati)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80904d9452276c829bbbe8c34c809876631739f494212fa7c45f9e037f45886. 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/ES7891000604.
L'incoronazione di Poppea, SV 308: Act I Scene 4: Speranza tu mi vai (Poppea, Arnalta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddca45669dafbc6f3aaa7735b874a69b3e9b351d1adbe94f5d719110166d5379. 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/ES7891000606.
L'incoronazione di Poppea, SV 308: Act I Scene 10: Come dolci, signor, come soavi (Poppea, Nerone)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4c5337f5047259402b2a2c3e5bf05399187ba5dcfc4f3f0ae5b27c1555b362a. 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/ES7891000611.
L'incoronazione di Poppea, SV 308: Act I Scene 11: Ad altri tocca in sorte (Ottone, Poppea, Arnalta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e6bbd9a2083ee30e7fca25b547cf22f89fb8dd369d0bf58687d862241d47b1. 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/ES7891000612.
L'incoronazione di Poppea, SV 308: Act II Scene 3: Amici, e giunta l'ora (Seneca, Famigliari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10f36d0d7da2622aea8b1074b1e4da025f665042aa495cc9364a372aa606f2f. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ES7891000615.
L'incoronazione di Poppea, SV 308: Act I Scene 5: Disprezzata Regina (Ottavia, Nutrice)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844960542ea23f07fdaa77015d830d2481fa30d59843327cab7f443c82159d8b. 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/ES7891000607.
L'incoronazione di Poppea, SV 308: Act I Scenes 7-8: Le porpore regali imperatrici (Seneca, Pallade)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc1e9fa7d54f26ed5571d8186c1bafec0cedcb13481bc5e9a5664499ceb0e04. 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/ES7891000609.
L'incoronazione di Poppea, SV 308: Act II Scenes 1-2: Solitudine amata (Seneca, Mercurio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c832ef8db4108d6dc32bdf9186bad1e57afd5ccc54787bf8fafb77c466e50ea. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/ES7891000614.
L'incoronazione di Poppea, SV 308: Act II Scene 5: Sento un certo non se che (Valletto, Damigella)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7c06f04078b209d01764e905e5d76234818fe05a9473b69dd6aa681863cc05. 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/ES7891000616.