Törr is a Czech thrash/black metal band founded in Prague in 1977. They are considered one of the first Czech black metal bands. To date, they have released ten studio albums, two live albums, and two
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 0x1fb65cad6d26e0c0d239bcafc355ca91a3cba22bf53515ba82bc2c7c120506ee. 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/c10841f2-ba68-4272-937c-c03dc754863e.json and https://artists.proofprofile.net/proofs/artist/c10841f2-ba68-4272-937c-c03dc754863e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Chcípni o kus dál (30th Anniversary Remaster)
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 0x7494b00073f8e7f67a6bf7e01d59fc75eaa9ca6204139de2623e2531fbbc438e. 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/CZA239300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8725822ab514f873d82f8ccc2c5d40cec479446c772f22aef9ae382e1ab4cd1. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/CZA239300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95aa6e15552b8dedd09f1f8b2adb2b3ef74ad5147d6bb8457db0107bf63b8f02. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CZA239300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e7804355bea8793b4b24891734b36e30e9cfb6fbb723d057d3ea025f0fd479. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CZA239300163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b51fdfe71dfc7a6304f42da8c7ecae5e23fd3374b5703ac15150d95f07b0ca. 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/CZA239300164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8977d3fb473f89a3e2c8dadd2b8a161e6838062f215859ea7e106718ff68bf20. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/CZA239600267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef3c746a22ccca9349f2889e2151a316317d241a0dfc42b019f1a8104155dd2. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/CZA231000462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa5cf62b24addda2ad0b33ad8817bfcc526cf42ea09b29c11abcccf9873d0b1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/CZH801100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f3a5a87133266d859f12d51ad65db98f25c00c503b55cf850fdb43419d1123. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/CZH801100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ae09e0a259792acaafd5a32ad8a61f4260d3cb7011d9cd4e041fa3a39c2e62. 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/CZH801100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c307ad64384460713dfe61ed3d61733af4a11e60903a80ddb5876b134e0011. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/CZH801600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514e7d3ae3b6eaf6275412ef31a6edf963a766ab09f77e858c8e21e6ea4899da. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/CZH801600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c1640f0d93adf11b529ad47b6a379f5821c035a117cc185f608e3c438839d8. 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/CZH801600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c59b08b7c8fc2dff9c724ff504eb1f9bce94a35cef5564d88faf4eaf88c3ef0. 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/CZH802100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80420756e2e0541b980e06c96e6ba69b380c373ac94e5bb35edc7b1039ad60ae. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/CZH802100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7388c3e91458f323c29443a0331431551780832c2fb69d04f2d1e9d8756adb4. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/CZH802100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06ade33df4c8130e06081e10b506defd3698ed010915f0ab1f1d09ed537828. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/CZH802100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f8da7cc154266efbe90bfeaf0c51aa4052f1d48d73be7bcd47e4ba5fa734a9. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/CZH802100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28bf92dbed52fb51eadfccddfeca3e5ba502a3dbf5d271e1b9abb14e8e85901. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CZD712400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5fb90c31f3aa55ac911aaece528abb9367128b89b872e58ac332a00ae1262e. 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/CZD712400227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dfd7093266377f24328876a7816ca1247386a8b2afa15abef709ad7753a443e. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/CZA232500237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fa6da3099e3f5ee85a73b3384cd15adf5335894c8a4f3c540b1ef97a82b91c. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/CZA232500240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8991dfd41a57f001ca66e88a42e79f0c50bd139361d2f7afff26242e57fa29. 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/CZA232500242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2124fbc6663bc5d8529b124ed1b11b27a7c17206b9b4bc38d4ff483fdecba501. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CZA232500243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd19eaf2c505d883c01d06bfe0f7877c0784505a13b3e51aae365635f7f7eeb6. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/CZA232500244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f200444c06083363e135de044eafb7eed872f5dd3dc7512f3478a178757522. 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/CZA232500245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9401d4ce6ac9d83b58b1148b0d053671d9732e7a3725521f59e761c793054481. 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/CZA232500246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ece63ae919ab976e2037ac181b587cdcbf683743cf8baf8fb6ba302eeb41eab. 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/CZA232500247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6110f23c4ff9d2913a226e6d6443f445e45f410c19641642c659e81b5989876b. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/CZA232500248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dac1589d9f5fa082ae89c178e9a2eadf332e7c0b547d6f233e1104cd618b5bc. 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/CZA232500249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3743b07fe063070cc76bb2c500b293c1bdd5515739a13c9f1c0d08fa4ac38d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/CZA232500250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39abe00aa553679ca862c7b5be5753eaf475f689e3effbe09e50febd04a2ed40. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/CZA232500981.