Elena "Nina" Dan (née Burlacu, 1967–1996) was a Romanian opera singer. Biography Elena Burlacu was born in 1967 in Adjud, Romania. She was the younger sister and only sibling of Angela Gheorghiu. S
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 0x49697f6f8e5b8d1c7ae19cfe617d7a0da020a077b9cdc14f33293441820e9779. 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/56e887d8-5dbc-41d2-92d4-88e121a06d5c.json and https://artists.proofprofile.net/proofs/artist/56e887d8-5dbc-41d2-92d4-88e121a06d5c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
L'elisir d'amore / Act 1: "Bel conforto al mietitore"
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 0x6972346ce6fb58052b2902ea85d4b2d69448daffb368f9997f76a5486ae8962b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF079643602.
L'elisir d'amore / Act 2: "Silenzio! E qua il notaro"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d428af052ba72d585987cd3976eb337cd18ee9d57908ed81d1689226006129e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBF079643620.
L'elisir d'amore / Act 2: "Io già m'immagino"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe022f067b780bd2056e8dc99b0d77ab8ac5e575bdf739c9ad7ad912641c1d839. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBF079643625.
L'elisir d'amore / Act 1: "Quanto è bella, quanto è cara!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a827adc3a99c72a39a1565f0f66640228fb65b097bedd14dc480da52cac95d6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBF079643603.
L'elisir d'amore / Act 1: "Benedette queste carte!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0b5389e19c0a69d12b6c44f3bf46e8688d9d00cd8ae5a8181780d8db096e01. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBF079643604.
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
L'elisir d'amore / Act 1: Marcia. "Come Paride vezzoso"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0856ef96b3999f6045a0f5d54a475d5293c3e46c3cb5401f606675a08572b50a. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/GBF079643605.
L'elisir d'amore / Act 1: "Or se m'ami, come io t'amo"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56c3f7a76c1a9e139fdcf8f346d8eb0ce66d6eee5e37000ee156261d252c97c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBF079643606.
L'elisir d'amore / Act 1: "Signor sargente"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50db398b91fe4109fbe3cc4c72e769450a3968d3675b9f617ec453b4e741e266. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBF079643616.
L'elisir d'amore / Act 1: "Adina credimi"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fc85e1eaa0ad45d2ef805432494498ce4d81f6cce5fe4b29a11b4f37b02954f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBF079643617.
L'elisir d'amore / Act 2: "Cantiamo, cantiam, cantiam"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b7bffa4a74092e94107a834c23060867303770fe9d6220fd157ed3e9a313b0. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GBF079643618.
L'elisir d'amore / Act 2: "Saria possibile?"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd894b45edbb38b996b007f2e0c07d622105945d160e7d73460c7d2cff7059022. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBF079643623.
L'elisir d'amore / Act 2: "Dell'elisir mirabile"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9dcdd1dfa8b5fba82fefbc2259ebdee5a70ca298c6534c9aa0e958766b91d8b. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/GBF079643624.
L'elisir d'amore / Act 2: "Alto! Fronte!"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f2bf5a37b156b2f54d9efd714d784b062ebc0edf3a1b25cbcdedaba28a624d. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBF079643629.