Marjeta "Neca" Falk (born 19 June 1950) is a Slovenian and Yugoslav singer, songwriter, actress, painter, art photographer and filmmaker. Best known for her musical career, Falk was a prominent act of
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 0x8dd00cc3628d65acc028631856d6846f77af1871f12a4d6d59a52e524431210a. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/731c0e4a-5f9c-43b4-89e9-909a06a0db11.json and https://artists.proofprofile.net/proofs/artist/731c0e4a-5f9c-43b4-89e9-909a06a0db11.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 0x86014ccd013ecadf3bf9a0c74af3e2ff03ce478b256693f32b12c454eb4c6b9f. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SIC032000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d23e0f241faaf0ccb7ab1639d6636f001171fc596dbae565b3cc5adf26f3af. 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/SIC032000121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6aa895f0f360d2129d1a6fdb7659e932e42c4d0431c87071d3fa322be9b7726. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-17T03:10:10Z), 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/SIC032000232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d9f74031ff9d81436682a6a283ac0fcba9e6089e90bad5834addbb346eb058f. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/SIC032000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6304c9ff51d107f7cb813db857835de831876a079422de035e228b9f531c4752. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/SIC032000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6457c5b101599db54b3b5219786e72eeae1e857fe97ddb21a173d26745f071. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SIC032000089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f8c2f53bd8d390042fc14807461988459beaf2f0309da485414dedfce2cd60. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/SIC032000184.