Exili (17th century) was an Italian chemist and poisoner. His real name was probably Nicolò Egidi. Few authentic details of his life exist. Tradition, however, credits him with having been originally
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 0x5149ed8dbbf18d71d673bec9ae35a74352edf3c5aa946e848b2c0b01553c2b53. 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/604c4943-e178-458b-8cd1-9af8f50f0684.json and https://artists.proofprofile.net/proofs/artist/604c4943-e178-458b-8cd1-9af8f50f0684.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 0xc564369d69dbc6202e4cc551c7f61bedfb21d0cb40aa8a728f3a6dd5c4aad5be. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/SE6HN1953356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc525e80810d6b58a8b88d5d3b656e6c3be6d34b8f735c8f62deda1e6ebb931ea. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE6HN1953372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dde03d8f5662859e3d58ec17537a8a1faa6d5f6425e974028272549652dcf83. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/SE6QE2261670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4969db990b918ef96eb6aa1f3a548cb9ec4c2622f6fe9493af37261825405296. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE6QE2261671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c391bf2ecc4304895dee23a8ea9643cbea1d56eedb40a25bd5cf9a51c934808. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/SE6XW2236307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e55882627d2aafaa5fc0f694a169addde140e75c859aa25dd048178cec92f0. 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/QZTAZ2513708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09af8ed36d97d1d8b32b06f7ab2b27f0767a4ca7f6ed9e5cb9ae61822d285c40. 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/QZTAZ2513709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41750194cb1db598fccf4c57d6393212fdcac7fbe5a50e9c37e53ecced71732e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/QZTAZ2513710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd483e8f4e6f07f1ad28f3150acdee263fa0d5667f599c2315a3e5a4ddaba2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTAZ2513711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f56734ab2a74c9d3897f48e24ef07d45a5662251f40256a49e4a643f9a2f449. 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/QZTAZ2513712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c42d598b1b27f8e989458759dfb0eb352f1352476c0b4442f13321a62ed588. 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/QZTAZ2513713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f99dde8d121d03affd7aae9af853889dacdd1f4edbfec399d254840eadd4a19. 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/QZTAZ2513714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ea69364b159ae4ef80e26956898863fa0101412983652f9db43e3a484476be. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZTAZ2513715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ebc9f713b9a4c26170d40f3c40868365ebb0c78b6b60d197f243595d09bf6c. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/QZTAZ2513716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54c82913eb630de7f6e15b055e401c78e34657fe08bf28c1ec5f34568f0b5a9f. 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/QZTAZ2513717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39502c29c88a3e3c354a8cf1b90ca08efe4ea1248166d8abed858f24a501cc90. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTAZ2513718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61689aef9b8efca93f3732349883e284f11a1d4c63ed74aae45ca3872b7f8373. 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/QZTAZ2513719.