Tublatanka is a Slovak rock band formed in the autumn of 1982 in Bratislava, best known for the hits "Pravda víťazí" and "Dnes". The band's classic lineup consisted of Maťo Ďurinda, Palo Horváth, and
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 0xe88f356a5cbc2b04ad062f6a9a61e0e7d283ee8cae3addec7f86ee32cde087ef. 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/7e3ac7f6-57a5-413a-94e0-da1568287d87.json and https://artists.proofprofile.net/proofs/artist/7e3ac7f6-57a5-413a-94e0-da1568287d87.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 0x1592e1828580e1f27395913c4157ad67ed549b553b0660001447ab140b038221. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/SKA120209202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee110b015673e797a487ab41af6e8caa7c80affea79ee6ddadd158f36e30fa62. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/SKA120209205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1f5b050448ee981fb23af78a083f67b95e6b689cda238e861163d8ea8b27d4. 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/SKA120209207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5f2b8a169b9f91ce445a95b0b77585100aa15a9ce30b457119157d26dd7b93. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/SKA120209208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce801996abc268550ff24e6f9c890298869a0f1152acb8d7cc6875fd835f75c7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SKA120209210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16ecf7b63d79a5a419ccc01ebaf56a0143a0476a024b994fce162d139c77b26. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/SKA120209211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d6266cf96591fccb742ae1e1304de7d5230de2e122ec0e59b0d6a41a9f75fd. 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/SKA128710202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6e18898ea1655d3550d384702e53a1add0555380fccbe5e4e4c10ebae57f07. 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/SKA128710203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b8f982b94f5de011d6b647901a178c14ff236d3d541767eff67f2eb6cf2b27. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SKA128710207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7239062f6d75597e753fc24aeb8d12e7ed4310e3f5dca133b1533ae28cec2b. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/SKA128710210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b4a575ab5f63ee2944d6055ce903a11e16d36cbf7e2e9ac3f0a479cbf0be72. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/SKA128810301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e9d0ae205c7bbd0864cbc097639c944217ca26529f184802294fe0e34b1289. 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/SKA128810302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b105b66187ddfe37b1da2d4c410534f220e59b152daa7e16d0df190801fbdc. 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/SKA128810303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1a85487d0b194df2a592801c9712a02b92fe28fc787fb903c521fa5614d755. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SKA128810307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5d92117ff935a974305cc3d858b3c0dcaf0749fba65b5fda95b67e22ba0eae. 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/CZA239500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e096b0052fcf47af5fe1021ce91bb57418de88ee507f4e81881946c229e5246. 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/CZA239500143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba753234fe972e8197f0b10203dfb98828ec005e5a9a7db81714edd1b9a308d. 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/CZA230100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152ae38f51036ec75b5e6e50ee4e72c05654d0d9c727a4d17dc53a66b5f8a12b. 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/CZA169100816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef10ad96a52f8b15a585860ef6b65ed6df81726ab2432fca99037a251feedc61. 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/CZA169096998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fa6166288c12b159f92f897422d4a58796289b074b1e291ac1e4836bd2da87. 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/CZA230500250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5d92117ff935a974305cc3d858b3c0dcaf0749fba65b5fda95b67e22ba0eae. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/CZA239500136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf72ae05a92d3142ab4769a47ea63df8ac13c5b9e53478c178bfa42b72fb2a16. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/CZA230100372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61165ad4db89654d5bfbd80c61ef83ec66f8d20138c2fc9ac41c7ccc7581383a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/SKG392300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ca515d8710adb8b2cc3bed20270632d26d1b12ac017610c1180e179488dbba. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SKG392300109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9994e2e3202f9aa8357ae8b0b65e54a75eb725f02f4a0f522e19ced8c8b79519. Chain 2 (Bitcoin): anchored in block 957526 (2026-07-11T06:03:28Z), 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/SKG392300111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5153a372b917ea57269782e6cd8fca6674b57a2afde286d76df316cb61422e. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/SKG392300112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2193893a0cbeb5ebb66d1f5b4b2a39f47368e2260f3db02de9ebead9ca750c9. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/FRX201716972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4689af2696edf14edfbf9f49f56750a95dfc237826009ff1f11dad755b4a048d. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CZA168600835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb9258ee06638e23aa49430bf1d38a1cc8c60d02de6817b2d82c53886220c18. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CZA169100617.