Sigismondo d'India (c. 1582 – before 19 April 1629) was an Italian composer of the late Renaissance and early Baroque eras. He was one of the most accomplished contemporaries of Monteverdi, and wrote
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 0x1e2a0ed3136d6add27637998231c78a754a56e6d60a9d8d962b711155a7c8851. Chain 2 (Bitcoin): anchored in block 953758 (2026-06-15T07:48:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b1ee0d49-94c5-4711-8451-952cab550f52.json and https://artists.proofprofile.net/proofs/artist/b1ee0d49-94c5-4711-8451-952cab550f52.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kirkby, Emma: Musique and Sweet Poetrie - Jewels From Europe Around 1600
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 0x9a4ba49a440b14d6f909969e89d16b95c83d1fb1541a3bd3ff8e8d502cd84f47. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T08:59:48Z), 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/SEAEP0605130.
Sigismondo d'India: Il terzo libro de madrigali á 5 voci
D'India, S.: Madrigals, Book 1 (La Venexiana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eafccd7223e089fe3548deedb6161e9b16a354f773794fc3bba13e4989f13c. 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/FR50X1629106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5815706ccebdb869bd147d78c67fe88c59186c8cb7e9582ac0bc82e20d7aef. 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/FR50X1629115.
Traditional / Arr. Pluhar: A la fiera de Mast’Andrè. Tarentella
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf18eb9f056f800f02d9e07734a5e6d1ca7d5d4bd00c5d6a0fbd178fe818eb70. 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/GBPFW2100133.
Falconieri / Arr. Pluhar: O vezzosetta (Aria sopra la Ciaccona) - L’Eroica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7146158ed7560150a156e7dba1406db5eacb8c34deeec58f1581526ebeba700. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBPFW2100134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fa37fbe03f2d0d641e45895f3676f8e6a84d99502a66c1241a38df7df915e72. 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/GBPFW2100135.
Caresana / Arr. Pluhar: La Veglia: Dormi o ninno (Arr. Pluhar)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0bcb8379440a902af34f1fe6d2764a9613976806bc104d5d3c074eef98c42f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBPFW2100148.
Caresana / Arr. Pluhar: Serenata: La Pastorale
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25d2dcf605b4cfa16036ddc13d0c84dec07243f5963786691c86467b22a1010. 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/GBPFW2100152.
Cor mio, deh, non languire: 21 Settings on Guarini's Madrigal (c. 1597 - c. 1700)
Meraviglia d'amore: Love Songs from 17th Century Italy
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28111f807f648c3fc73bc4c3872ce9ab10115fdd8272c2a9bc7e6e2aac6bf07. 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/DECP61703002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9255d0ef3d7ad861adde8fc4c6816fd5447bd03c0804ecaa29879876cbbd8a. 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/FR50X2403710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a5b61d9a24e72100ef030c90bf0518f770485a9b618d31371aa539533fb0cf. 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/FR50X2403721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda82561d28a145b6e33bb92bfa2bd8b9e6c5a02bb52b0314dcf62842fe251a6d. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/FR50X2403726.
D'India: Il primo libro de madrigali, 1607
Sigismondo D'India: Madrigali, Arie e Balletti
D'India: Le musiche da cantar solo, Libro V
India, S. D': Vocal Music (Music of the Italian Renaissance)
30th anniversary Les Arts Florissants compilation
Schweigt stille, plaudert nicht Cantata, BWV 211 "Coffee Cantata": 4. Arie: Ei! wie smeckt Coffee süße
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d280da8ee6ddb11d3dba91a8d052f2b25871c621ed69b2445c84c6d7b10cdb. 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/GBF078611870.
Il gioco della cieca. Madrigali, Canzoni & Villanelle per cantare, et sonare
D'India: Ottavo libro dei madrigali 1624
Cara mia Cetra - Mit Orpheus in die Unterwelt
Il quarto libro de madrigali a cinque voci: No. 7, Ecco ò mia dolce pena
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636fa3675c0bf1f4a3c1919ae8771c1f7c941f99011637eca8caead4f9c90e1c. 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/FR7JM2421010.
Il sesto libro de madrigali a cinque voci: No. 10, Io pur respiro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x031614141c9b0c5479fd2efbd0199d8d23022218f06de14cda1ec9ccb97d0ea7. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:19:05Z), 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/FR7JM2421030.
Musica prisca caput: No. 53, Musica prisca caput
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec287ffafea63746aa388a6a807c35ec4ddd401dd97d994f90cd5989d990a8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR7JM2421090.