Narcisa may refer to: People with thec given name Narcisa de Jesús (1832–1869), Roman Catholic saint from Nobol, Ecuador Narcisa de León (1877–1966), Filipino film producer Narcisa Freixas (1859–1926
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 0x48b82098fc2126ff7d75155d10d20ba1205259feb5e417cdc1235f46bfa83c7f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a98efaf2-06e0-4c11-a215-ca899f5edee5.json and https://artists.proofprofile.net/proofs/artist/a98efaf2-06e0-4c11-a215-ca899f5edee5.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9065f1084acdb0a7818fca0487151534921fea1cfde37f96ebf52e64927540. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/USCHR1378866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadd2716a141d625e1d4a1dc03e6d93d8bfdb4bffc99a06d04bfe0b2e09ca03e. 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/RO2DY2300503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c09bfa47e0f1cc50169655e05ae143a3349eb845bf53bef7a909787ed45697. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/RO2DY2300523.
Daca Iubirea Noastra Nu Se Imparte La Doi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22923d80ef89d42a12cef2b317bbfab633c6f0f656d9de3c15fc30ce9cb12675. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAFI2008119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d212cd9d3a5b0a187fe440aca6d55b78d03e4d74085eeca0f46e735e951fec5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCAFO2136129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb295960598cdbe873da1c830a88a28ff4588c7efd06fc55faa0cd90890b568d5. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FRX282276218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883547c8181db7a725842fe74d515fb6aa7b55173b9a748cfbb32ce2d180bbcb. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAGS2207965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66174d99cf6e7a22e74fa6103076a3f9c12b27db581850eb6fe792893302c4cd. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAGS2230360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf6f913a261b8ad4f0a508c1057135cd817fa466bcbe8e38b70800618befac5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DGA062314098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x920558f62b2a8418b1f60dae4f987c143b221a656b0376535538d471e592e56c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/RO2DY2300156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8812fdacf19313b900f3a1e98d10c145c276b5f24f9156f46a666f3ff0c8393. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA072338297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed74c09c378df43ab5bc2d0d8ef41ff077089cddf12931a9210d3a115f1283ce. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/RO2DY2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cb9f49027b5a2324d6c38f1d079dde2e36cde8caf3a7c2c36d68fa670eac25b. 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/RO2DY2400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfa5b705bddc4859962df6ddeaf6077ffdb008cca3e8f8f257b8317dbbed7913. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/GX5MX2552821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce937de74f2335a834583606992199a4056041c995fdae2533d103d2150bb606. 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/ROGRA2400546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f576ad0f78eab8f78d91ac453e647aebfa099109239f4dbfa9f9e38df6884ee. 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/ROUM72400149.