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 0x8c1a4312352e03e7936543d2824ebb0b93a9b6a4b93659d249975d373c513e67. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4521ed93-f4fd-4179-a49a-fa4a169dea66.json and https://artists.proofprofile.net/proofs/artist/4521ed93-f4fd-4179-a49a-fa4a169dea66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Messa Della Domenica: Tocata avanti la Messa Della Domenica
Schola Gregoriana Gregoriani Urbis Cantores
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 0x01442edd86de2ea0655c581bf256148b77a8662d3431000e1ec2441971abb880. 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/GBSMU2957811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e60f30468f12d3fe79ca97271501bbcf56b283a1eaec1bd97dea42bfbea731e. 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/GBSMU2957813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d6e41be1190d320202825063cb89bd31835be889f8fd973c1aea1ff3b6bf130. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBSMU2957815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219acd1d9bf39e942b92de5ff195d890f01d6c0e40ca5242d28db25867c8ce5c. 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/GBSMU2957817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x823978d74c0bf5a1b830b700c679661bd7e65cc0cf30f76eda1c15ab71001c8b. 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/GBSMU2957819.
Messa Della Domenica: Canzon Dopo la Pistola
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4893a895814e4cbd8f40c249171b1135474d65d568c06b2ca3c09f4db8c380b5. 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/GBSMU2957912.
Messa Della Domenica: Recercar dopo il Credo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706dc699d8974b680ce0a7e033b36810fcebdd1e0b7d12bc9a8f80dcf55a4f66. 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/GBSMU2957945.
Messa Della Domenica: Tocata Cromaticha Per la levatione
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee6eb642bba6b496467b8f8e429e0b5b15cdc4fd67cb5dda139d4016c4183dc9. 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/GBSMU2957947.
Messa Della Domenica: Canzon post il Comune
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050a1913c901795d7412331a5fdb583ea3abdef4b950000122759ded15f625d7. 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/GBSMU2957951.
Messa Delli Apostoli: Tocata avanti la Messa Delli Apostoli
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacfecb4ccc4540352abc92a67df40aa9fff3aad16c813d5a5c75fedf07622424. 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/GBSMU2957965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x133a2c98b4628133ac7cf0afbc9965f65417e9cab52afacae0be187a76d2d217. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBSMU2957975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4823dd3ef93a4873763722a89f24fae40df01cf28e73c29ff8a3747d32616741. 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/GBSMU2957979.
Messa della Madonna: Recercar Dopo il Credo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9958f7e249333f30e6ebda87ab2112b821a468166a1bf8c0d940f697584f91ae. 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/GBSMU2958196.
Fasolo: Magnificat, Salve Regina, Ricercates
Giovanni Battista Fasolo: Messe; in duplicibus diebus e Beate Mariae Virginis
Tessarini: 6 Violin Sonatas, Op. 14, 6 Trio Sonatas, Op. 9
Veracini: Violin Sonatas from Unpublished Manuscripts
Italian Baroque: The Instrumental Edition Vol. 7
Viadana: Solo Tenor Motets; Canale:Keyboard Canzonas
Corradini: 12 Ricercari & Vendi: Canzoni
Iribarren: Sacred Music in Malaga Cathedral
Giovanni Battista Fasolo: Messa della Domenica e altri brani
Una finestra sul cielo, musica per tromba ed organo