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 0xd1c869834f0403928fa0c444fe41f6285560f5cc1a5c48a66862f9ecfa422a14. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8cb76a4-2721-41f7-925b-44205401acb5.json and https://artists.proofprofile.net/proofs/artist/b8cb76a4-2721-41f7-925b-44205401acb5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vespro della Beata Vergine, SV 206: Invitatorium. Versiculum et responsorium "Deus in adjutorium"
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 0x2a75d1d76d0c8a58a308a7cdee3a51bdc714c410a1adcecaad2909e953685904. 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/FR7JM2206010.
Vespro della Beata Vergine, SV 206: Psalmus "Lauda Jerusalem"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b8178271092d573ae8362563b0bd9a8912f0c91cccfd25c320a761628ddea0. 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/FR7JM2207010.
Vespro della Beata Vergine, SV 206: Psalmus "Dixit dominus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1adcdc74dc58336952b00c33d4fd18e74f28d9161789ecce4462bc8dddb799d6. 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/FR7JM2206020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174df11475df7bf26c813593334a82410c3d0db2cf40c3a38bde1cd8f9a0410e. 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/FR7JM2207020.
Vespro della Beata Vergine, SV 206: Concerto "Nigra sum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fb5a366a983f1470b380655142ac8630dbe076b8cbfaf1ecd42abf13c7d3bd. 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/FR7JM2206030.
Vespro della Beata Vergine, SV 206: Sonata a 8 sopra Sancta Maria
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6ae258960cdc77e3e8ab07815a3f08b54f02869fa54130e37b64fd5efed242. 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/FR7JM2207030.
Vespro della Beata Vergine, SV 206: Psalmus "Laudate Pueri"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0714bdf58717f68727a6d80d1539a88ac0ee12b1c309e269e6c4c7d0ad0ef037. 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/FR7JM2206040.
Vespro della Beata Vergine, SV 206: Hymnus "Ave maris stella"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802a6f90ab32f4ce8ab2d86d34fce4f0cc55c8855e6a007ba862bf47b4c08b11. 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/FR7JM2207040.
Vespro della Beata Vergine, SV 206: Concerto "Pulchra es"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42aae099ea64acd7fddf405a9c5a17bf02df6568654a35823878e35f6a3b4df9. 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/FR7JM2206050.
Vespro della Beata Vergine, SV 206: Magnificat anima mea dominum
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c6a088901805de8c2d55ee0b8cd3502300fd149c8da41e63d07633a10d0b83. 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/FR7JM2207050.
Vespro della Beata Vergine, SV 206: Psalmus "Laetatus sum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a31f1b3aac831c414af897bca5d85ef146af826d64353f7bb7f6d5fab9b05f. 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/FR7JM2206060.
Vespro della Beata Vergine, SV 206: Et exultavit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6570dee5e8a87ed52e2cac8be07e3da220730e335aa3c7cb94b0d2afcdba605. 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/FR7JM2207060.
Vespro della Beata Vergine, SV 206: Concerto "Duo Seraphim"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42ae0f1cd30119b081bf4d4b62df595f7b1e2201fa738918e567f81c5c379b6. 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/FR7JM2206070.
Vespro della Beata Vergine, SV 206: Quia respexit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfac282d536ca88ba587043691765f5665ad7094a320e00f888d5640483219ead. 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/FR7JM2207070.
Vespro della Beata Vergine, SV 206: Psalmus "Nisi Dominus"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12de374c0c36d430fcadc832eecb8fa3a57704ad0f665189588b71a058b92981. 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/FR7JM2206080.
Vespro della Beata Vergine, SV 206: Quia fecit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2b7aa270051ac4dc92d2e7b12b5d619097683ac614687c833ef5ca0f806865. 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/FR7JM2207080.
Vespro della Beata Vergine, SV 206: Concerto "Audi, cœlum"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d6ee8e75b172674705c9528c6130b3e7714123f7cd28fae5ff9bf5c26b4bf69. 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/FR7JM2206090.
Vespro della Beata Vergine, SV 206: Et misericordia
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d6c0f6cb34476684e845d1cae2eaffdf5b2b9d3a91bfee6f6a4e01b509321. 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/FR7JM2207090.
Vespro della Beata Vergine, SV 206: Fecit potentiam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a17b7984e7737dfc5c81d739c3aaca38925859e95b48ceab4c99e98f9837f4b. 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/FR7JM2207100.
Vespro della Beata Vergine, SV 206: Deposuit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bafe179276158215c14fdb60b3ba5b38f351e5eb3bbbbb803e3907d2f27dfc. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/FR7JM2207110.
Vespro della Beata Vergine, SV 206: Sicut locutus est
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a6ed40e9cab50fc1cba74b995d8ee986e17d08e717be02e87a90c3682a2a625. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR7JM2207140.
Vespro della Beata Vergine, SV 206: Gloria Patri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17bd77e174602412618334112351596216fafc12c177007a992179a4b4336d2. 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/FR7JM2207150.
Vespro della Beata Vergine, SV 206: Sicut erat
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d18e820e8c617b71c7e8b66615fd07ad57ee27f6ed3c2e47d36cce110acf0a. 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/FR7JM2207160.
Vespro della Beata Vergine, SV 206: Conclusio (versiculum et responsorium) "Domine, exaudi orationem meam"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa501b8bcf5a167705cd776a735f82a976ef77a977dd8f5c4fb97c9103967ed08. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/FR7JM2207170.
Claudio Monteverdi: Vespro della beata Vergine, SV 206: Concerto "Duo Seraphim"
Monteverdi: Madrigali Vol. 3, Venezia (Live)