Giovanni Battista Buonamente (ca. 1595 – 1642) was an Italian composer and violinist in the early Baroque era. He served the Gonzagas in Mantua until about 1622, and from about 1626 to 1630 served the
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 0xa9f902ddf6a1b2bf84ae0ec2294517d4ba5ee3e0815d18c7d48a8bbb821a4a9b. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5747d56e-4a59-4d50-a26d-1d6ff8e17931.json and https://artists.proofprofile.net/proofs/artist/5747d56e-4a59-4d50-a26d-1d6ff8e17931.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Giovanni Battista Buonamente: Balli, Sonate & Canzoni
Buonamente: Sonatas, Canzonas and Sinfonias
Il quarto libro de varie sonate, sinfonie, gagliarde, corrente, e brandi: Sonata No. 8 sopra La Romanesca
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 0xe9660fe81b356f2d9ec1656e434150ed92ea49905003dc69cc885b42e8b0cb29. 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/SEAER1295030.
Sonata No. 10 "Cavaletto zoppo" (Arr. Montanari/Trovesi for Chamber Ensemble)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eadd0bd7b65fb25e062c68b87cba38e21fa1681fd0e40249505390260436690. 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/DEB331439009.
Il Ballo degli reali Amanti: 33. Ballo del Granduca a 7
Stravaganza d'Amore! The Birth of Opera at the Medici Court
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999bee6bc5e28f4e37b2eefb4a188ce679e7663339df4fcbaee34617422566cf. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/FR7JM1663330.
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
His Majestys Sagbutts & Cornetts Grand Tour: Italy, Spain & Germany in the 16th and 17th Centuries
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c15fb7809be378077d0b3044c2568c4d4cda0613149a27205ae74f93eb6ab. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBAJY9684701.
Musica Polonica, Eastern European Music of the 17th Century
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534429c0d8a1cf6ebe087934ece6ce66a8202e04f219f2b15b957eb19293e6bb. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/MX2831000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907c43e30b0137ace98a42232989dc4be0fa68248636534e1645439b63127710. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/MX2831000053.