Szidi Tobias (; born 28 May 1967) is a Slovak actress and musician of Hungarian ethnicity. While in her native country she successfully developed an acting career, in the Czech Republic Tobias establi
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 0x8d70bdb652510f16ff21a74bb3717abe8d08cca469ffbd35986359503ecb4294. 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/c8f8f108-53b6-4c87-90ad-e2e41262747d.json and https://artists.proofprofile.net/proofs/artist/c8f8f108-53b6-4c87-90ad-e2e41262747d.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 0x5f13d7518e660629c00d3f679fa78d94b23b199fe4070a23c8854807ccf7003e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/SKA831408503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5afd514c79959eea62d87ce94b6b56bd361b81f62cf21c6c61f18dcf827a6c8. 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/SKA831408504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc67cab455b9e9063cc8ff9963fefec28ea7c01cd715fe53b4cc08dfa19ea940. 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/SKA831408507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe444b44b9a60d40fb85f4857ecc1e21f595cd02b9c8dfdde07654c598fc90a12. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:40:54Z), 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/SKA831408511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd930cf080364b663c57d863bee029fc5deb17651162bb60cd2258945e1f10f9b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SKA831710701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52959f35e5e36d39df3b32fcc9d04f0d43d1250e0f124b80d01c91937cf4192. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:35:23Z), 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/SKA831710702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70cce8d8e98b8aeab66e2b70c09090ba69a413c7e51cbb9820850ca54fa4689. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SKA831710703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b4a6b8618bbd1ef3ce530e01bea450eefffb87b59596ac9083836483dfc785. 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/SKA831710708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad5b1a96df39203a582c35276d90567244091f2eedb321958d5486d28171064. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/SKA831710714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2aa061d6f3011ad6ecbba1eb979b3a23194a7f5841e7550fc0c87e0ec8d2a71. 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/SKA831710715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8989ffc47ffd55bc662e70eb964aa5772c76466474b168684c098bd8973689d7. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:34:10Z), 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/SKA831710719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ab6cee5fb9135b382785ef688d2c33380ce7770b8c3ff466ad84df0af35a488. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/SKA831710720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cc2417bce6fdf91042c17233031d73bff5816706d8bbcb99aab8b5b1f4cd7b6. 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/SKA832420001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x367402b663dc132b4209806c9420005786e3e52119c2ca23dfec253433cd440e. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/SKA832420002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea8722098a816fa95883d5783824f748cb29d7c281687d2278966b2132215db4. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SKA832420004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c0702191aa422fe37bf7b8f334643c85336cbed09a515c6ed6ab4c149480cc. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/SKA832420006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0748fb2372b8f686e654065352654c135a53c41d2f5537f6a1f91e06c7a529fb. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SKA832420007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a855f72623e8ecc9c18e9ed2daecb3141fb8bdb646ff33e8643a2d1332e740d. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/SKA832420008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458f4eede1b3ef70285da987ea86875f1f802d03a9daf83de81283138e85df33. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SKA011800063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ea7a29811667fafdd29cae256219e879992e4bb7d3bec885f68185752c6b1e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FRX201717075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75414ccb52e1c1b43aefb78a6910ab8506d69f351b630c98876511f3fc720832. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX201717077.