Narcis may refer to: Narcís, or Narcis, a given name, including a list of people with the name , a Tripartite-class minehunter NARCIS, National Academic Research and Collaboration Information Syst
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 0xd1460aa3e75859fc248370219e364519ade708b741c47ff6fd3168ba17bb8054. 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/be620828-cad3-4c73-8039-afa87c9a3644.json and https://artists.proofprofile.net/proofs/artist/be620828-cad3-4c73-8039-afa87c9a3644.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 0x49777a47ee8f3f75849e23b822882a01a1bebbe0a9bf185d53d6f8135acc3f20. 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/DENW81800000.
O mio babbino caro (From the Opera "Gianni Schicchi")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa769d70114485d7e453c52684f44ffb322e89cee02ae7af0d47c4397e23c9be2. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DENW81800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x494708a76191c2ececc3991ede5ba05f9f2de59cd1328df4819399fef85927c4. 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/DENW81800002.
Lascia ch'io pianga (From the Opera "Rinaldo")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a51a8e920f4d231606041b0bf8546dc1d8681e9dac1221b490e4e3679e97db1. 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/DENW81800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51397d088f97e74b699130b1750957a67355c99b6bd00440f488ebc6e64d252c. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/DENW81800004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8303748c18e2509bfc35ce32daa242202eba12bae5d61a9bf4cd557845fcb13f. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DENW81800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x241c96f71353ec92435731cb83c7d9cef348fcdd3ad06e5e017eeaae2a8c6f84. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DENW81800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50a205c3e314eed0cf9975346190b82ccf5525dcd167ea365391ea7a24a5c79. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DENW81800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e13737f47e8352b137f41b3021c7d7b58c227ede879e961e572414e7256766. 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/DENW81800008.
Sancte Deus (After "Nimrod" from "Enigma Variations")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc67e0988094a301efe66454b03916867bde0026917daa08b8b18ddfbd5bdf0dd. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/DENW81800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573abbe390ece942052e5ffd1de42be9f14953b9023c1b234448ba2a48bfff42. 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/DENW81800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70088b61083c47bdfc9a3ce1324352802f10e10ecfad6c9bd4d2c8e95b28942. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DENW81800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fc0f01c21b2d200ce41f0fcae5c509c1baf7433f18aa5bf6aff681a28ca5e1. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DENW81400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e516360a79dd0111d6c17baba284edbd67b66e538f029267996fc7a550cefe4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DENW81400026.