Sonoio (stylized as SONOIO) is a solo project of Italian musician Alessandro Cortini, best known as the keyboardist for Nine Inch Nails' touring lineup and as a member of Modwheelmood. The name of 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 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 0x331fe45181afceb3ce7fde614e7792f4bbb7763917e79a945f08416d8159b9e6. 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/7440d114-4504-42bd-9280-11f4fb95159e.json and https://artists.proofprofile.net/proofs/artist/7440d114-4504-42bd-9280-11f4fb95159e.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 0xe24ada99f806cddfb9cf5efed6519652ee80421fd2bc22111c16e39a12eaaacb. 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/USKLR1000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a619603d10a59eb0ae44a01174547885d616f9a2964e3bebfc07b0e603caa15. 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/USKLR1000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4db8e04a21c437634ab7922dd735ddf5ecdc0d102d3c86c34bb0fc38789dad2. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USKLR1000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf99e75ace4ce541e31f346eea2bf15b17f82f3aef0038645717991ade8444c9. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/USKLR1000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x103c0fab20d2e68376d57e2898ec70704466b45a4bb3d0e8bf9b48730b729c35. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/USKLR1000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dca04e1b51e14a74eb08b975aac98afea8945ca7f1e332752141b73e0d02c32. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USKLR1000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8194c9e55f9ff977c9787307e6d802d0f21a6e9e874095f4be64da7202c3f209. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USKLR1000015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e60adfedbf2c6e5d4de537ed6e91b6bdb80519b13a089f8ad4e785082488f5c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USKLR1000016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6d9b420fef311ddfb23246976e575662edf95864a432ec605b2da3a2f6a889. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/USKLR1000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0ade80e78e0712899468c4771615ec606185f5b6bda0097a3b9c12ec29d2b57. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/USKLR1000019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc3084caa25b6872631080d20ba11c2245d0c75eb40789d16153bf07c081f25. 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/QM4TW1830567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1a72e441ca45579cf60b72cb7ffbfd033b93ed6b14b5fa049c942bcf369424. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QM4TW1830568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d6a839cad2cbc293b835827c843b5400f1fddab7473edf0570e5de15f5896e9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QM4TW1830570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fc05a84d725a17180dd342650c5067b5a9c2305ea5db527d70c638667404e3. 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/QM4TW1830573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042a694d75bc0719dc1fcd64b98e7e45fde20d83b56ba0dd9f452f481ab98583. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QM4TW1830574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef20c2a1deb3b6837cae41f3a5d0e7bbcfa426a8414e5aac2eae43bd7ab48c3b. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QM4TW1830575.