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 0xfab4bfd34cc315c09da1d513796c9a2a4abcda0e35251cdd5705f40bc8fd8709. Chain 2 (Bitcoin): anchored in block 953984 (2026-06-16T18:08:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2d6fc5af-3c88-4b7b-b2d5-fbc84613dabc.json and https://artists.proofprofile.net/proofs/artist/2d6fc5af-3c88-4b7b-b2d5-fbc84613dabc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pergolesi: Messa in Re Maggiore & Mottetto "Dignas laudes resonemus"
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 0xc65c98ee06ee7028067589f4dcc719956bc529291a7bc05b16c31a3856a290d2. 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/FR46Y1644401.
Messa in Re Maggiore, P. 46: II. Gloria in excelsis Deo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902d687508cb5003674acda06d8d4aa9ca10927abfee09de281f20ff195838f8. 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/FR46Y1644402.
Messa in Re Maggiore, P. 46: III. Laudamus te
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a73dfdffe02637e18c1ec6f55e2f0e420c24ca5d7c8b799302bfb7889cf920. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/FR46Y1644403.
Messa in Re Maggiore, P. 46: IV. Gratias agimus tibi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79cf9006c063454f440618949c6aa281d7de52374ef937fd80a9f72b678f6e16. 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/FR46Y1644404.
Messa in Re Maggiore, P. 46: V. Domine Deus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a0bb271d94985dad2894b308125a2f8ba6ffcc7e4a96fec571ddaa38027c1a. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FR46Y1644405.
Messa in Re Maggiore, P. 46: VI. Qui tollis peccata mundi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190ff3fa1b4241d0b40295476da031d8023899294a772ed727bcbd38ab8ff5ed. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR46Y1644406.
Mottetto "Dignas laudes resonemus": I. Dignas laudes resonemus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec82b460e74eaadc0f07c0d1d7640c05addf4640e08e45fb65d7a8d7e8a02cc. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR46Y1644409.
Amare e fingere, Act 2: No. 4, Aria. Oh mio cor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c1e3bfc055f6c09936ad5a93aaa7accb28ec2462e21fbaa7d6a89502fcc220. 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/FR46Y1849319.
Symphonia a 2 violini in D Major: I. Grave
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3323988ea7f13bf0f285d92e6c3e5c96a59722e0cd0f4ef459d911a104faa60. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/FRZ132315010.
Symphonia a 2 violini in D Major: II. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd49b3ccc19ca07f5e73bc124114170e9433cbcd36b03c7a63d26f2fb60d640. 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/FRZ132315020.
Symphonia a 2 violini in D Major: III. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327035617ede81a16b029887f33ff245d004bca8e5ca7964390e6d91f5ba36f9. 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/FRZ132315030.
Symphonia a 2 violini in D Major: IV. Adagio - Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d2f6fec2fec6ea2699198936ca592820248de1c28b0cda9f497b995c939808. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/FRZ132315040.
Symphonia a 2 violini in D Major: V. Allegro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83c7fc3cdff5645637590fff74bd012ec248a33d4f070b437352edba00955ecb. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRZ132315050.
In tribulationibus, in angustiis: No. 1, In tribulationis, in angustis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167486680c529bf987737b8c6fe8d820bca8f62b9f8eaaa9f41994b774690652. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FRZ132315060.
In tribulationibus, in angustiis: No. 2, Aria, "Ad montem venite"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87354f5cae8c873394a5ad3d5da9bb4d69f670da5c0bac0d911b2f76880eb661. 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/FRZ132315070.
In tribulationibus, in angustiis: No. 3, Ad floridum montem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca77ead1bd07f4b9ff92a24222ec742b95e33bd3f3013db2c2440de9588185e. 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/FRZ132315080.
In tribulationibus, in angustiis: No. 4, Hic spirant lenite
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdd9749619ab660027850110564778f3eb5a1300101e135ce3de30fe148431a. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/FRZ132315090.
In tribulationibus, in angustiis: No. 5, O mons delitiarum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a744d974d6fe3a71a716b7d5afafe67c3bf808db02ed101ef9fa98faee3aa2e. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FRZ132315100.
Exultate in Deo fideles: No. 1, Aria, "Exultate in Deo fideles"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e432f62ce6aa989316ba5b83fad8255cbf8e94d220b174381998ad483f5b9f. Chain 2 (Bitcoin): anchored in block 960430 (2026-07-31T16:09:41Z), 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/FRZ132315130.
Exultate in Deo fideles: No. 2, Haec sunt munera divina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7029747619ec8bbfa84592e49a719373517973d9d0b6f99917017638ff1aa66. 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/FRZ132315140.
Exultate in Deo fideles: No. 3, Aria, "Exaudi supplices"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27483d38ef3a6c79e4a7fc54103e58f8acef91ac8c5bf9268ee38b6ba92a13c. 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/FRZ132315150.
Sistite sidera, coeli motus otiamini: No. 6, Aria, "Praestet tellus encomia florum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffcaa31242ef93f5d0455d9736456ef5a33fe5f005f80942feb9e3a28d29bece. 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/FRZ132315250.
Martini: Musiche per il triduo in onore del beato Giuseppe da Copertino (Live)
La principessa fedele: Aria: Troppo è timido il tuo core
Paradigma Medioevo: Music from 14h-century Italy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66f4a2ce719df23df4cc8403e8c1a86db83f6a9d9225d2312434eb0a6c7a4df. 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/NLY332302589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec6d36c2ac04e3b3be1856d6f279936a8032cb476e4e940ef649f12caad80fcb. 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/NLY332302590.
Melani: L'empio punito (Excerpts) [Live]