Alexander Cesare Gemignani (born July 3, 1979) is an American actor, tenor, musician, and conductor, known for his work on Broadway. He was nominated for a Tony Award for his performance in Carousel a
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 0xc70c4e7262b5b8b7a1b54c6dfa4933c30f19d57093ac09cee6e564d4df65433e. 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/e2b71874-d407-4e32-b7d1-14a595d7c0d2.json and https://artists.proofprofile.net/proofs/artist/e2b71874-d407-4e32-b7d1-14a595d7c0d2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Violet (Original Broadway Cast Recording)
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 0xf8d5a3ef22287fee5bc0a9ed8ab0bfa8cd5b1510e572fd7ae0958bfb5cf19daa. 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/USB961442205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8995e71c811b9cbac380731810562464cb3a65933d3ea946d2a4e7192683c1fb. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/USB961442207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb631bf52d5b3e47ea80d6f72d430efbdd1e58475de651409ee21ad5d582f59. 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/USB961442209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc062186ab3e9eca9bd91500b56adcfae4fcafa4e6fba52bf9f9a59ff6ff386da. 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/USB961442215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdc43a820b91815c4340c68997fdb0ea760bda08955c1c0ae2c1b29535d23b3d. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USB961442225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d00ef61f5c9febd575cd60e5a1e72b5cefe6e0b28810b9d1fb36065a9bbcb5f. 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/USB961442228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a4190f85af26beb2a91a69a5c885e41052dca984d16f101eeb955a600ce704. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/USB961442229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd339d9197c3cc2b80d36919b6bdb78fd4d076f55d488728273731691a7e0052b. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/USB961442230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50ffefe8ebbcc6ef18a6d46768096e2417f189d614aeb42686577356f43db034. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/USB961442231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e1b595a85c84e80be772f3f81c27271e96a27c3ce4cd2fe96e90ebf74d833f. 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/USB960442101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f3a63296443b7eb9f757eaa1fa203d930f78f7461dbe40ea98565635eeae1b. 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/USB960442108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd37e2aa2c8f1bee9efddab0b5bd3cbb61e217ea619c83b9556d1df2a0f81c43. 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/USB960442112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6afcb6f1d1fcb741cb5c23dd9298d5351c71b046c66207005d3624d58a5773. 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/USB960442113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8c268c5a08eb55c5bce4759eb5b626d111f2eaeddae916eb38f66a9582355b. 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/USB960442115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb0f3e9bff217e026f63edafbe7e859ddd460d70fe03ea277e44827c2775f3c. 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/QZPCF2000006.