Ján Kroner (1 May 1927 – 24 June 1986) was a Slovak actor and one of the first generation members of the Kroner family. He was the youngest brother of Jozef, as well the father of Janko Kroner. Filmo
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 0x60cbd185fcbb1abf9369d4f4cfe0874a5f5a9f4672f7500153e1fca1278d51a5. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb7aa420-ea7e-4f7a-8026-91b5c825e7b9.json and https://artists.proofprofile.net/proofs/artist/cb7aa420-ea7e-4f7a-8026-91b5c825e7b9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Rozprávky 6 (Najkrajšie ľudové rozprávky)
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 0xe5b36b34869b0f7be791778ba9b5796979aa524583e39f71dd224d3bf92e5a02. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SKA111012801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407a0d51c5967f3b992b7f588a4099ca90bb8941bb3e1ee3eafc856f58c63004. 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/SKA111012802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b54b9fdf7d71bf510ee854a17cda721fbef393726d74466136558bed3ad0f67. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:04:23Z), 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/SKA111012803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a7d3796aba85bf58fedbb6408c19bd4fd05d0f07db53e32026e0ea0da97b3c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SKA111012804.
Rozprávky 7 (Najkrajšie bájky a rozprávky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50dbc4eb8503779c1698774ec1027ff7139063f04d3952b7a5dd861b048662da. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:24:05Z), 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/SKA111114401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd411418639143d50b5ff7be33ed2264f99d91ca0596444ced6bf1dbd0921aa30. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T03:03:10Z), 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/SKA111114402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72eda7a422fa18bdf8a80f51682b88dd61c6f0c1b2414056f21653fc381285e7. 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/SKA111114403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80285a5c41f454df4b36f7b82acfbf3c4c0e807d5bf1b379563b9ff4cba78726. 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/SKA111114405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2913d2862a16b959f3151c52fa67fca73877229b97b9ce05c6c2a97ec2f5168a. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/SKA111114406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c69ecdf781d5ac9abb3cf2839d034c0573b81b7db7bd25760acf18dc3e124b. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T02:38:55Z), 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/SKA111114407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0452c1c286e478ba02c709045c997fc00cea195f9ef3b1fbda533a015ef2d9f. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SKA111114408.
Rozprávky 8 (Najkrajšie rozprávky J. Kronera)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f786dbb1f29e79883e1299beb88c71d5e1d5180431af94eb22206c0fb025605. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:11:22Z), 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/SKA111215403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52af8648a5e417f3d31e6d16e7e43444be9fead8b09fe6b8e5e1a95a3ee9003. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/SKA111215405.