Karel Kryl (12 April 1944 – 3 March 1994) was a Czechoslovak poet, singer-songwriter and author of many hit protest songs in which he explicitly criticized the Communist (and later also the post-commu
{"copyright_id":"0xeaf388395fccaa9e6cdedcbd6dbba0a8e982df3cecda1cace13af7b41adb0a33","name":"Karel Kryl","registered_at":"2026-06-12T11:44:33Z","symbol":"NIM0287739","token_address":"0x85fa1880ed5c32a13fd3e0a4f8bc22b0c69356b3","type":"artist","uuid":"df2cc987-ed12-4a21-a3f8-4aa5f59569b9"}
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 0xeaf388395fccaa9e6cdedcbd6dbba0a8e982df3cecda1cace13af7b41adb0a33. 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/df2cc987-ed12-4a21-a3f8-4aa5f59569b9.json and https://artists.proofprofile.net/proofs/artist/df2cc987-ed12-4a21-a3f8-4aa5f59569b9.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 0x820532860bbe0036f4086f412f23cd447384666d485e6cd1d46fcc07e1637427. 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/CZA160605311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800e442f8418dd4e1c2fe14326ce4ae19f5a576b30d52155d271d61b0a3212d3. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/CZA160605327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98eb9dce846ea3e65e5549fe6b1c423611713295bc70c50d3d40b3cc0e5a70d4. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/CZD946900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e28e46357067eb6edefdbaec4b2fa3d898bcd58b9160248e2cc9ec2f275020. 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/CZA160901819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c81ab0d55a3bf848789e2e0d09c0c89fef7288ffb8b3105260f87f10c3a88e. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/CZD946900004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76468c26edff4930277f6f1f2ab418237ae2eaf29382d0da833d93d6ff6c14ee. Chain 2 (Bitcoin): anchored in block 958911 (2026-07-20T16:46:31Z), 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/CZA160901820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5968caeee684103104352ce30b40b6f2fd53dbece6ec4fbc31b6bb8c72e369b1. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/CZA161340774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6c526355952afbd5dfbe4ab64b207fca423545b6d3aa36c83c6b4ea3beb5df. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/CZA160705776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x295b9c7f25dddf584d4076896258a8a0362fded25a01f769fa5de1a9dafa4d66. 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/CZA160705788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2956678e1956234023d25b2d1c9fa7ecf068012d19c5778718c516c597eca0. 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/CZA160705787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab097cc194c26fd266464968091c2cfb04dd7668c1eeab7b41eae7795d5c1e2. 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/CZA160705795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59a3f7874a77f722d871eb5ca4ae961d51f4c32de488290ea4fdac93f328f13. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T02:14:33Z), 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/CZA160901823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6da67f6e4d2e9e1665ad4ab677fea8597a69e20fa934fc1c082c1c144a43b4e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/CZD946900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfdeee90165e9b20b300801abe6e0ec94be51338fc9550c9624517b76c2b25a. 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/CZD946900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4739ae6f1f148109da48d5dc513c928395de891aeaca0fb2941edfe1a445c583. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/CZD946900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7b63d33157596342c298c70ee9bc20860b3e2bdacc5fb1b77698bcf28a940c. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/CZA166900715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0a47be759bf16c1a3f65a2a900eefef2f608634812d0d54410d57b8b5b1f4f. 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/CZA160300585.
Zas padá listí.../ Básně 1962-1991 Audiokniha
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a585c80b8b4021928a0458e668ab9d402045f6b3f9b2f55bca3d7dd46390dbb. 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/CZA161204984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce22e83f5774b5d4396fd940e1c03473179e1f49d49dc0d517bdb006aae77db. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CZA161204985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59c33eb4c66f814ece03a93c31201e031f5249b7924b1ec344fba90ddec3be9. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CZA161204987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce56e51ab696155e3c8a8bc838cda3972d1bc04a96df0f8718a85e462eeb219. 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/CZA161204989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea26a3d1548b9508cd4684da14f7a608e7928c69e30fc60b1f8e8789bd5d070. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/CZA161204990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cd23f256119fc2307f27ceaa08bb35f4b7267288eee31caaca94a57eabad93. 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/CZA161204991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb730772de82c25fad233cbeb372666a06e6ff68e2c2acb04d4fbdc67e7d57e. 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/CZA161204996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a8a2e8ec527398173db852a24d0b61d7f23c989b36977345f57b49a270abd4. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/CZA161204997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe137fe9aa3c77b7db6b001f03486d13029cee142e396a9b8b29e813a7ac4230f. 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/CZA161205002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4602a5276f5219ee112b1fbdef6561485f3e7a93deb638c3d879d993492cf1d3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/CZA161205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74604c07d9cafc6a4f637ba1b794e2c4b14e70b84878c50b0e2e0895578f25. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/CZA161205008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef43c2390e64f45c3356f8e318eba6b354a4dae202488c231f11ba897adc2d05. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/CZA161205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5059e5bfbca05c58e6a2cfa9d3b3161ff7928ed82aecd870ea35da237ab53624. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CZA231201765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455ed40f9f88c4907cbb990fe1403c90f5d445a3d52bcc926c033be5df47b58a. 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/CZA231201769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa824cf5b777f487612bb5c23893004a3fac043e3696f62063f30a38f68bd7386. 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/CZA231201774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9151228ffdaf44fe69feeb8bff927fb95ad09d0d08d5ca2cb439f5ef573c4042. 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/CZA231201784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d107b34f888323c4761aee644737e8c03da2ebd64e2bb0fbc0814d010b2881. 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/CZA161400525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d54b5e4c22084f79f540671f1c9fa5546425ab5641705b15f53d325b1a67140. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/CZA161400528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf4dd8fa07df88a52877112750102fa6ae3e774790b854ba77d981ee4da130a. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/CZA161400532.
Varhany V Olivě / Organy W Oliwie (Ve Jménu Humanity!) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2feb6d6b3f5c7a8594c83e481281611792f624f8205a14c619d893a3739a0117. 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/CZA161400536.