thumb|right|250px|Zrní in 2011 Zrní is a Czech alternative rock band from Kladno. Their first album, Voní, was released in 2009 after the band had already been together for eight years. Their second
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 0xcd31f82b671cc5beff1ab720a5e84250066398287581ce414817dee6ea8be8e4. 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/e18179c5-d032-4038-9407-639d62800f00.json and https://artists.proofprofile.net/proofs/artist/e18179c5-d032-4038-9407-639d62800f00.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 0x0842b8fa9999decc3ae60d3d7d10fe6871c91c95714890dffdbe3e611078942e. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/CZF881100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a4bd9d6a26227422ee376fa718f7f070a718d5bd92c0f3b71dd3f3939b00ce. 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/CZF881100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17afcef1cd876a1200b09b6a876c236015d43893bfe47d626320e5585c15afe9. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:01:17Z), 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/CZF881100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6282e9c6cdb3fc07fbc48aed2c9d447f90e4a59d76bf95a8eeede8ae10a9922. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZF881100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59fa402f16bf18b41ab5c74810cf7703af711c0a9ac3fa371454f836a227039. 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/CZF881100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9741b132def93b65a6e6c015bdd73cce0aa5aaccb7dece0010e81e228ca105cf. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:02:08Z), 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/CZI841200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764afa37855bc2e74806fc13de6eedfb2f31e1f82ba127b7cf063d94b8ac88a7. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/CZI841200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b37199250c0d1fc5070af2584bacb2c29f48d2273f8a14d832721c4afc4df27. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/CZI841200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0187f95bf245df2a77c579dba9b41d3988581daf7a6540a64fb1d6020bda1e4b. 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/CZI841200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3459b66c2e42d631e367a93c80006f21d0cc783329ac18487faf9ec5fe6dbb70. 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/CZI841200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f52f29fc0e7b624e89e82f21a3b310ecbe3cc0c1fb980c5653d9234dbbfa2c5. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CZK671400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15531bef42dfb6039deed01dbe510e82bd8ffca5d705296898d5227e805bfeeb. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/CZK671400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce04682492f9719284e86915187c593217e215a34f6ef5f5ea1374ccdfc4cf6. 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/CZK671400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e374b62a5422c74a485b59d3eb2c49197bea4cc12dd0c376c4c3f447d4d1cb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/CZK671400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc266df69a096c668be42dab7edc86b957235553bbb8ca4636d9471e39df3cec. 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/CZK671400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa848f359c4a6c4c0282cebb94664bff5eb0726e9ff27bca2debe4458b326d9bf. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/CZK671400018.
Čtyři Honzové a jeden Ondřej v severní části Střeleckého ostrova (Zrní Live Acoustic)
Čtyři Honzové A Jeden Ondřej V Severní Části Střeleckého Ostrova (Zrní Živě Akusticky)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fb583a55275a7ba3808e33b129e2b6be5e416797610034f61582fcde2123d. 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/CZK671700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6fa4fbf6d871a8da722d19b43c219fbfbdbc79b45f151cef783ddf150cb882. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:03:48Z), 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/CZK671700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348186425193ccadf6d2d191e169d75edf31655459bf33bee235171867dd8635. 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/CZK671700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ac5b3dd1ef17c436903b64648775bc2cb4af1229d0f5740a5ff3aacf52dd98. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/CZK671700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533d921e531d216fd3bbc5385adb7dad9f68a5112caf385a91a22844b2c71e8d. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/CZK671700010.
Zrní a filharmonie hk živě ve foru karlín (Live)
Dneska už na horu nevylezu, není to potřeba
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96130506ab9178e62e3e89e859cf16ad811314b17c7ed48af08270d6812a003. 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/CZA163370078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae4410a7b3f995dfab91c7c08b82969455befbaf51f6a32d6744e361857f17e7. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/CZA163370079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab4ecbad9330bcf4a65b244a98f4cfb17f1719259929bd9e39937cbe6a6e1b80. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/CZA163370084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007d11ba1fdf3d2d16478252ae6505737dbf3981041c298a5454d97b23628d46. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CZA163370085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2a4d87d8422764436491d751917ef7749c4abeac0715e5868a777ec47f0f164. 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/CZA163387144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d59c02874021d8d75a9cfc7667db69bae797c1ac965defe1a85262076694074. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/CZA163303449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x460052cae8ba6977e436ba7668202a2d78149b6b461d6be19d4ba5afe1500a02. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CZA163303450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1ad5928c8046e9df23f9c120919f72636b52fecdb660b5d5493d69ee437858. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/CZA163303471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cbce70bbf821ae3c8ce50046b82eceabd9f838c89676bf71f67937150cc1dcb. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:33:01Z), 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/CZA163303473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bac30eab2fdbfcbf03d38667721e9bf2dd9dd157e39dbb344b652ee340c7d12. 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/CZA163303474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb89f4e62f785a52d8d859677e17f835a1482eca915d4e2a69ac323babc950e1f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:24:37Z), 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/CZA163303475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3797c64359fde6cff120b79ea88d66f85ca4b9a84b500a5d64d5f415fa84ff. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/CZA163303535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09db5cdc97d12b7e9d21191853d37920cde8032afbd0c324ff33bdcbd7b2676c. 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/CZA162401388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe017e7b94abcd579cd4dd87a50ebe877973ffa90ae8d8a76b7531f5231700bf5. 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/CZA162501332.