Bellerofonte Castaldi (1580 – 27 September 1649) was an Italian composer, poet and lutenist.Nigel Fortune and David Dolata, "Castaldi, Bellerofonte", The New Grove Dictionary of Music and Musicians,
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 0x72133c5a5f04d3bd2575e152996cd4a96d74d6c837f25542bddb7fe7e6cffae3. Chain 2 (Bitcoin): anchored in block 953780 (2026-06-15T12:02:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d4c64576-c1d0-4fc8-bd30-2c538d242159.json and https://artists.proofprofile.net/proofs/artist/d4c64576-c1d0-4fc8-bd30-2c538d242159.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cappricci a 2 stromenti cioe Tiorba et Tiorbino: Fantasia detta Pegasea
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 0xe0c068789e9b2f54f1e7ecef5a58284724aacec7d1b2de408f236c8839dad540. 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/SEAES1299060.
Cappricci a 2 stromenti cioe Tiorba et Tiorbino: Arpesca gagliarda
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d2651ce0435a8ac45067677f3ed96de0f6ab44aa4a693d99fc700b76e0d3c9. 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/SEAES1299070.
Virtuoso Lute Music From Italy and England
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ce90a20d7d5b05f3b010ad4e1c217292f0acda17927b82fda53612e25f99cc. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/SEAEC8711030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f500785fe58fcd837089cd939123c57d2053f3c5f18119272e0bdabd61e989. 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/SEAEC8711060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f32ae76e566a9e715469c2f50b89063b7fc02ad7801ab837ca37022266fd50. 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/FR9W12207793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf623e13cb61891d357b04868ff79e6aca4f97d3be1d0011942b15d899a854be5. 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/FR9W12207794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc356f9f745bbc5039735f3f29e88bad3c0feea7f863f7760a3c5883a65f83a4. 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/FR9W12207800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb131142502367ad87363a17f0079e7135e731db52419b59f0573e6c03f45b3e3. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR9W12207805.
Castaldi: Ferita d'amore (Musiche in habito tiorbesco)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb80d5976c8d3d4385aa8b50f548fde02e4db784a0e1feabecac737712337b544. 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/ITS661100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f610e06a597795163b0ce677b36b809bb379477aeac057a5129a69bb4a47b5. 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/ITS661100048.
Bellerofonte Castaldi: Capricci per sonar solo varie sorti di Balli e Fantasticherie
Castaldi, B.: Vocal and Chamber Music (Il Furioso)
Le musiche di Bellerofonte Castaldi (Alpha Collection)
Capriccio for 2 Violins Op. 8 No. 14, "Per sonare il violino con tre corde a modo di lira"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x287dad2a7f45c5ebfc194ed6ae37a054bf7d6c96f2caba04e75e19424a513222. 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/FRZDG1401266.
Saffo Novella. Dúos i àries de soprano i baix continu de Barbara Strozzi (1619-1677)
Aurora Corrente. Capricci a Due Stromenti
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ede0d011f69dbfd2a2cd9da4870b66bf823009e752014ed9f2fbe97f7feee63. 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/ES71G2150769.
Canarios. Tablature Di Chitarrone Livre 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221df1e16283b7b4a962b446e0b8b47f8a4ea48075030c2856b0265eeaa4148c. 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/ES71G2150774.
Sonate Al Pizzico: Italian Duets for Plucked Strings
Affetti musicali - Venetian Music of the Seicento
Amours, Zéphyrs et Sirènes: Works by Castaldi, Falconieri, Frescobaldi, Merula, Rossi & Uccellini
Délire des lyres: Chant au luth et à la viole
Caccini / d'India / Kapsperger: Pianger di dolcezza
La bella più bella: Songs from Early Baroque Italy
Un bocconcino di fantasia: piezas para tiorba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1212c637f72cc98261c15a686fbb885e99b400b7a3be730d88cf500604270aa. 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/FR50X2306601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23c1554dfec3f3b8f403b9a072e6eeaadb30c19f3c58cdfcc2914e0dd116e7ef. 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/FR50X2306602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x173ee543997fe5d018d2ab449ab7cc7a4108ab0bb660e175af8bfe7754a19890. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:21:11Z), 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/FR50X2306604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eaa5367d56cf44369fde9d30cb94daf13d5abdcbd44bd627a4c85279a8e0d92. 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/FR50X2306605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69a57c3c9cdf80ce71ee4b028a4be6548183ba6fd27a3d71ca5f7b1238cf4c8. 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/FR50X2306610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac28b861117108f21b68e203737532c701f485a3ab9b0c99b4b487e033138da. 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/FR50X2306611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64dc997cb5d9dd31acdc98848ce117317e3d27f0a1cd46b785df26a5a091182c. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:39Z), 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/FR50X2306612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef6018cf8093fc9878cbad7e651c444872b49a8d9ce85078c7c25fd71d3392a. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/FR50X2306614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x817d53423e44fd99557d594c7b38fb5c5fb69fee78dc6f337769b1e37335df01. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:11:06Z), 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/FR50X2306628.