The cultural and artistic events of Italy during the period 1500 to 1599 are collectively referred to as the Cinquecento ( ,"cinquecento" (US) and ), from the Italian for the number '500', in turn fr
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 0x44deee4da3ba247135a8ffa194228e25462120601e3f9d208c6231a7b370b60f. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/31c70dab-59be-4a90-9b10-ccc346849677.json and https://artists.proofprofile.net/proofs/artist/31c70dab-59be-4a90-9b10-ccc346849677.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Amorosi pensieri: Songs for the Habsburg Court of the 1500s
Philippe de Monte: Missa Ultimi miei sospiri & Other Sacred Music
Isaac: Missa Wohlauff gut Gsell von hinnen & Other Works
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 0x7347839fba88bf97be37cd29b8292bc956aadf04e63bf3b0e4de409be23c1696. 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/GBAJY1074911.
Lassus: Missa super Dixit Joseph & Motets
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc79496abd203d5ed2e41bf2d67206a15260d2ac79834abf590c27a27ebe69504. 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/GBAJY2341402.
Daser: Missa Pater noster: IV. Sanctus: a. Sanctus
Padovano: Missa A la dolc' ombra & Missa Domine a lingua dolosa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x789bec0bb93a746c5b8ccdd2cac693238fc325267ee6b065ce03accd193a86a8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBAJY2440701.
Missa A la dolc' ombra: Vb. Agnus Dei II
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a753bca2b74cecb07e21c4a0988da5486651b66d821f4968d94a8680ba0f5e5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:10:49Z), 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/GBAJY2440714.
Missa Domine a lingua dolosa: Ia. Kyrie I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e92559717fa80b10d5d7f3ba181b835b00d3f7e717211ddf6129f83630fcdfc. 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/GBAJY2440717.
Missa Domine a lingua dolosa: IVb. Benedictus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0417c668974b33f30334bbcb36bb4961290ee7bf7eb6d07c3f14ed82e40a7bc5. 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/GBAJY2440727.
Regnart: Missa Christ ist erstanden & Other Works
Johannes de Cleve: Missa Rex Babylonis & Other Works
Lamentations II for Maundy Thursday "In Coena Domini": Lectio I: No. 3, Quomodo sedet sola civitas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877c58963322d410966c787397374269f9a77230a5812a7194430e3bcc4dc832. 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/GBAJY1928403.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio II: No. 1, Vau
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3816f43983247dd5918354cfc3b24240882d27e2f81f9cc706383732644648b. 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/GBAJY1928407.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio II: No. 6, Heth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc13505dca43c48369df42654a158f9137b408c9ad4146305ecc82a8777fad423. 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/GBAJY1928412.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio II: No. 7, Peccatum peccavit Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dad81146f699ea8a9da337bc4693c3a89864183fe0a9533b752c66a0d815b0. 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/GBAJY1928413.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio II: No. 8, Jerusalem, Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8d73d03d9eca158c3bb2a39910855c70ea3a237e67622e94e9a4430d473a13. 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/GBAJY1928414.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio III: No. 1, Jod
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4463e72b44d8cf4d4e1d5362fa0df294885a7b5c45cc643bab59447cecd9340. 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/GBAJY1928415.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio III: No. 4, Omnis populus eius gemens
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08f2e6adbbc3b29b6aa80e66b3d2963df332cd66b4435b233c07f6be988b5819. 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/GBAJY1928418.
Lamentations II for Maundy Thursday "In Coena Domini": Lectio III: No. 6, Lamed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc18734c88feb30a01178f570905faf906f410c9405961b74edb899b7589949. 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/GBAJY1928420.
Lamentations II for Good Friday "In Parasceve": Lectio I: No. 2, Heth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49b2cccb355fc5ff481bc53d3d6714895ec1aa1ab5d768f50ae0e8446643b02. 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/GBAJY1928424.
Lamentations II for Good Friday "In Parasceve": Lectio I: No. 4, Luxitque antemurale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9376f1a2ae3da5e0db085102da677e9091dc67c003d8aee29653c1d40ae87b26. 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/GBAJY1928426.
Lamentations II for Good Friday "In Parasceve": Lectio I: No. 10, Jerusalem, Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb0f3d63270ad320192fbd7ceda01ba87f80bcc7e28d533e5c8c7f385be1edc. 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/GBAJY1928432.
Lamentations II for Good Friday "In Parasceve": Lectio II: No. 2, Matribus suis dixerunt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6584159369209d98b8114bd8db5cd5607ba323638abe4067c25c5b2fdfd2aa70. 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/GBAJY1928434.
Lamentations II for Good Friday "In Parasceve": Lectio II: No. 4, Cui comparabo te?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5329eccaf7877e7e699de560aac74fc756f7a19c6ef18b2786d91d99322f2fc. 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/GBAJY1928436.
Lamentations II for Good Friday "In Parasceve": Lectio II: No. 5, Magna est enim velut mare contritio tua
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f745896064f0b527963186f188e4c23fe2dc5622c75b590afbcf07ec09d30cf. 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/GBAJY1928437.
Lamentations II for Good Friday "In Parasceve": Lectio II: No. 6, Nun
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394781185aa7882a999edaadd9473db03b96e1027204e1c4beeff30caeb1d4cb. 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/GBAJY1928438.
Lamentations II for Good Friday "In Parasceve": Lectio II: No. 8, Jerusalem, Jerusalem
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c40851559c0677e510a1860d8e3aca531abb9275f7cbc7a14d101f86d2bff0. 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/GBAJY1928440.
Lamentations II for Good Friday "In Parasceve": Lectio III: No. 2, Ego vir videns paupertatem meam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d80e7ec116ba93e975c8b6debc10c0195529477f4c48e4b7ec84eac8c8d7814. 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/GBAJY1928442.
Lamentations II for Good Friday "In Parasceve": Lectio III: No. 6, Tantum in Me vertit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0cd5b093f1cd80e68058762ec76f4ce4270d3b75097a28d21f503f9459001c. 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/GBAJY1928446.
Lamentations II for Good Friday "In Parasceve": Lectio III: No. 7, Beth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9911f65615ee6354d3ab5f54657aa750d9b15390325cf08eaca5484fffc5e62e. 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/GBAJY1928447.
Jean Guyot: Te Deum laudamus & Other Sacred Music
Vaet: Missa Ego flos campi & Other Sacred Music
Regnart: Missa super Oeniades Nymphae & Other Sacred Music
Music for the Court of Maximilian II: Vaet, Lassus, Galli
Padovano: Missa Domine a lingua dolosa: Vb. Agnus Dei II