Tosca is an opera in three acts by Giacomo Puccini to an Italian libretto by Luigi Illica and Giuseppe Giacosa. It premiered at the Teatro Costanzi in Rome on 14 January 1900. The work, based on Victo
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 0x0ad1f0b697ee622343fb63278b46df9fa809cd2d3c8b20fa8771140a284059af. 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/d672d70f-ac8a-49de-9ecd-9ed00192a60d.json and https://artists.proofprofile.net/proofs/artist/d672d70f-ac8a-49de-9ecd-9ed00192a60d.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323f02db74465892ede780914ff20aad05b2d8635849cd5f571821aa9edd3463. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITQ009600391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x892b38be773256e9cf763fd26bcdcb4bb8127cdcedefaba7ec70bd0df030ce7d. 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/IT1SF2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa30b01e104bdbe554f2e127c54d4826af85c67dcc1e21b74636525a5cd89f453. 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/ITB001300177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbfcb81d9cb3049e4e734439a30fa72f54d5cbd0112b4a5cc460fb928bab9212. 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/ITB001300192.
Il mare verticale (feat. Paolo Fresu & Ermal Meta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac623fdcbc7b72256d9a1924a747dd95a8f89dde429031229557b614e068284. 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/ITCV32412301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3123a86553e97e30afb0612d85724b66a4bbd013cd1424fd6606e6e153983e. 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/ITCV32412303.
Il sentimento delle cose (feat. Giovanni Truppi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600ff717165d5155b1f8f768852fe74ee277c19c57df6bfca1590603e8ae88ec. 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/ITCV32412304.
È solo un sogno (feat. La Rappresentante di Lista)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b903479604a3cccbe6666c9f526f39716883c9624e8a15ff4c7d2ddca02277. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITCV32412308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931e88ef5254bcb346df677f2d41f1f2c0e596736f6458dd8d47455a3161114c. 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/ITCV32412310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5bbb6c23d95eacc26f1820f86bafc81364bdb28ce44d2d3fd6b303ba4d2515d. 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/ITUAX2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a4d7c89dea3088a7da55b55d632d67f83b4fe912385b3b93f225ec149203f2. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUAX2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b4dabb27c4ab5c45a94e6e445fa679563e34073e1214d7a96a3e373eb452d87. 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/ITT531900304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde36d0c92863040521ff5b63fa818d994d00bdca6c0d8f66db82430897137ca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITT532000327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa6380514cbd71c5d86e4c79681e7bb264761351db152a1927996cb05e23aa7. 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/ITUAX2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b5192cf3bb685963c5764a13dd1ea4659e12de0f07fdd9b76cf8e52c0c829ba. 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/ITUAX2000001.
Il canto degli italiani (Per Croce Rossa Italiana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53973f7bb4be8a1ae1dfce872db8f72f135ccbbcb8ef2b4590fc56733f3ca6ae. 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/ITK009300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91e70db7de83507fa2bb4be6aa9eea60e7a1280e613f893e2d9b562db46e5ba. 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/ITQ002401729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9808429b20a4ef9dc108c1eaced0652f60e4c08716fa1fa68dddc72172d3ee8d. 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/ITQ002401730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284a7cc7821fa094493efc4c7c25f1652bf93abbf9af1de1cb09d5f2ecc880d4. 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/ITQ002401731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f12247d4f4f96552cf79576598b9afa9886d0ce7d5b2c5b10b160aadd4a481f. 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/ITQ002401735.
Vorrei incontrarti fra cent'anni (feat. Tosca) - Unplugged Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93466f6ea18a457d59c101532360eaf9fcde56c880ae48ca03e024efc488dd72. 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/ITQ002401737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bcac1508c26f485455cf4b6ef692dc235d651de5d1e3d092b5799916cdf70f. 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/IT0361200069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf08ae7eff1d2ca1637627d9666812167de190ef3e93465bf8cb033998e060fc. 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/IT0361200070.
Cantanti, attori, musicisti insieme con Lella per sempre