"Nessuno" ("Nobody") is a 1959 Italian song composed by Antonietta De Simone and Edilio Capotosti. The song premiered at the ninth edition of the Sanremo Music Festival, with a double performance by
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 0xb5db580e5ae7fe6004acf478460c66a815df4ff58906ab2a1e0d8a10987ed479. 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/e01c1528-d574-4e53-8702-e02f2d6e28ac.json and https://artists.proofprofile.net/proofs/artist/e01c1528-d574-4e53-8702-e02f2d6e28ac.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 0x8427ac3b12dcf551576d966f650fec9677cd38d18665646f5ed34a0bec462820. Chain 2 (Bitcoin): anchored in block 958670 (2026-07-19T05:26:23Z), 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/QZHN41993401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684e7c3a8dba2594d0fe445c3c316b26d47e6ec55a40581b99e8904ca1d02508. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ITTL52030193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82303884cd5f32fd028b81f8071df71656d1866734ce652ebe4da2705853422. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZK6N1910826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98cc3a53567b8cc87c71f7a109dc9fa6c3335c186516e815531a52114b6ec5c0. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/ITTL52112371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd4d9c8a61961a798732b7ba01802f8d7f30569229a4f172f7293d763d0708db. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ITTL52112902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b4196cc5133450a817bb050a09423b9ef05c2c0be81e15e81ec978ae4f2127. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/ITTL52295505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289958d9b05c2fbecbefdfaf28f2a691b48d6f1310469f20976e1c09b14813fe. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ITTL52295506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4606bbdf029a8b8edb8896d59d74fe2f28e5a8937ca6d24ae5be87042accb1d. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/ITTL52291015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617479632c72a05103b62981641b835a112a7845c17a11d18fba510de5e5612a. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/ITTL52295507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaebf2c8fe1983ea8e3f064ca3be0bf1869ee4731c77bfaff072e76c437bdfad1. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ITTL52295508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee58af283f9a6d9c391831a3b83470d3697b6853d84059895898427a95b53fef. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITTL52295509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33922c6e303ed223f9062d47ba9faa9fcfff562cbb63f8aac73655c12c0ddeb3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZK6F2443790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d192c8be56d96ee46327e6b1f9b2b6b1728d2ec91e112755a7826935850331. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZWFU2401677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db042b3baffef4d99ee0f4c81c6411ed6699a5f85dd4890201b7013c384c14. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ITTL52315101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593403cf86862feea03526809b9df225a9f7d67e10eb1ed78ab1dc826c52f99. 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/ITTL52112351.