Francesco Sartori (born 1957) is an Italian composer and piano and trumpet player. Works Sartori composed "Con te partirò", with lyrics by Lucio Quarantotto, for Andrea Bocelli. The song was also r
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 0xccf5d3996f75d34f7cf68be4404e50726fb8104e0f14980d25794b4759cf4bd9. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f6bb5bf7-0e22-4136-b573-cb62a24d4dc9.json and https://artists.proofprofile.net/proofs/artist/f6bb5bf7-0e22-4136-b573-cb62a24d4dc9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x3660a88764ffbdb205496775079cd0bb6cd8c797d7dac6a39e1d7c895530aa2c. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZHZ41991962.
Con te partirò (Time to Say Goodbye) [Instrumental]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a01d06196ce522c229345e628912b0d6ffa2df16499dc5b53909fd5bdcf0a92. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USL4R2502825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22da74fd8370bfcf00c32c5f50fb86d4780ea4d058db292259ea84f972aa32. 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/GBBBA0742060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa17f4a3f4ca0a474cf1dafe5dc8f88257d40aff8e5761931a27222dfed4727. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITZ049700077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559d97dfb129890fb2bc3850a8a46c502365633a094af9a2c5b19325859c4a0. 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/ITZ040100717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1f6fd5f6426d70164dc971d3986657992d38c013d1ebb2e35e424724478204. 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/ITZ040700160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0092e559c22ca4210df728862d6a712100aac04e3ec0177b6c52548518e11b. 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/ITZ041800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead73045e1a9c085c973a56fefe56cc75f74c3f35e0eaccb33eacac161ec70c1. 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/GBAYD9800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73c3dbcf8686a688f0b5ad664f8f9209b538f317bafc68c8eaa9f678cc1e668c. 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/AUBM00900148.
Con te partiro (Time to Say Goodbye) [Arr. for String Quartet]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa678f586bcb4fdd1093def4489c61df464589991575cbfe7f3de058fe90ab. 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/USFCV1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9198b847d75fd305d0e6cd9df1ecf18e27885596f2c1df0bb48405cb6c62ea. 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/USSM11603457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc626543c4d00670127480f959afe41ed910771df35ac949c0473d64d5a9f69e3. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBF071300530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead73045e1a9c085c973a56fefe56cc75f74c3f35e0eaccb33eacac161ec70c1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAYD9800299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22da74fd8370bfcf00c32c5f50fb86d4780ea4d058db292259ea84f972aa32. 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/GBBBA0742060.
The City of Prague Philharmonic Orchestra
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75599babbf1f753a4248dbd224ac101a732b5ca3141c2ed6146afd2333581eda. 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/USSM10306226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6531ab2e746ddace929e3beb1dc7ad43e7672a2bc411bb655a3e055827a45151. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/USBC19901226.