The Hardkiss (stylised as The HARDKISS) is a Ukrainian rock band formed in 2011, consisting of Julia Sanina (vocals), Valeriy Bebko (guitar), Klym Lysiuk (bass), and Yevhen Kibeliev (drums). They sing
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x8f158f75ee70732f8abf09e6f8ac18e2b3fbc54a171f0a71d582d2a50234d302. 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/ce99def3-b424-492a-9908-010a482c97b2.json and https://artists.proofprofile.net/proofs/artist/ce99def3-b424-492a-9908-010a482c97b2.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 → block OTSBitcoinBlock must exist at that height 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 0x160d28a46bbae23c4c6fcff9ae9d880c976b602330e830850b80e384d976b33b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/UAAO11400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652bb16debbb3e1d994adc3c8db9df56c590b3a152a2dae57d9b63942463be6a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UAAO11300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49b44f183e693850f06bb771b9cfc662801e1d0cb5c43429eb4876ffa89c06c8. 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/UAAO11300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3bfb28a52c27fc708c4aa8324b25dc5d8ab79b310cb4df49e675ed787f98b6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:01:52Z), 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/UAAO11400016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfbdfc6f2a143dd4e1d2d9577bf52370ad3e955fc70b4026f9d147b18b2bd20. 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/UAAO11300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0757049ff48153ed335c7cab18f1f4e2f7d21a55aae56c5b280f3c23116d246. 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/UAAO11300134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf1caf49d35e8ad7baf5b8135d2d779c18be007d68b215fd7c3cb7a96899c83c. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/UAAO11400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799ef9d1237ba6cdec20bbedd33a87f94466373876680711ee451409bab2ee5b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:52:38Z), 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/UAAO11500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2ad0438914ec4744e5de6806226dd378d2e97a88a5d05966e5ea358705bedc. 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/UAAO11500280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224b6c0f64ea50587866e5963f190d20d273abbf94ccf526ebe513a38708c108. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/UAAO11500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e142e7f2cce958a639d4585af52cb6ae1ad03ed6adcbf53859071c99ef831e1. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/UAAO11500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f354e1d891069bc91fde67bda9833ad77c6faa4161e21fa7dc47d67e0c838c. 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/UAAO11500183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde33e849c109dd9e0ea42624458e1257988fc6022e4f9f5158970899f6eb960f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/UAAO11600090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb678be1e083c2ae4432192529d708cf1acc7e037c26e538b60b4ed4e1f7f425d. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/UAAO11600256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea159de8d8f3ee9c4d60ccd217a34cdb250afd54d446f460a67a5cf13c34ff35. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/UAAO11500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb390cdbff673cdccb133ad3d058eee04341b226d8b817790ba769b7b9377c60c. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/UAAO11700364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb375624e001ee35c257774c839c0c889434d280bc685a16e5eb00f76a2bed5d3. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:38:50Z), 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/UAAO11700392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f8f57a18e19a15af0b458c269f9e6ae3f55a61bdd8777061c3495d706e4c4f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UAAO11800443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738618a3725a0e14a4662f2b7c3a968be7e83c77fbe6a515aa76082855107cc9. 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/UAAO11800445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x167df53574255598c4cf68629b55b98723d13d5f300672d0335497d7cb69ecd1. 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/UAAO11800448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf605716b7a004a28e57b9decae391a2f29d4d5d4f5aa1758e40897d8b5e6426. 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/UAAO11800452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccee4947478dfdc67b5a16d1b99d1db4dc7b81d6828f44c76759d308443f455f. 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/UAAO11800453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e934cd16ed7cc58ac54f1202e1b5215420340fc2cf95a25758815ac6401310c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UAAO11800454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89c1111218c8b00ea89956bd944ec8a9f29945ea61e483b944dd1067b94e444. 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/UAAO11900296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde98d028a74ba8ce2f066a3712356c60159c0a9154ed94eb52f4647953f3027a. 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/UAAO11900424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5adb2dd8cc5639578df5ea5adf5be65dff6f06de852bc8903e8b94b41042f5ce. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/UAAO11900564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2d5f54ccf5c88698b2c2ff31f14ae6953a1d57b88eba4836dcb5cf9ba5a8a9. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/UAAO11900574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cefd5dcd9fc7b4291e26b370293eca7f0fc3f62713562721dda47dad66edf0b. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/UAAO11900578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7396e7e76f3494e62af42efdf340894c668d79120fb066649324426a906eda80. 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/UAAO11900601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c294208ba8e40b2909f5316abc5f627c5673ddb2673562c1bb37ad8ee478db. 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/UAAO11900730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83afe501f2320016a46ae9774f52309e72ea3fec123c82ede3b59f6887c6c8b1. 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/PLUM72200989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf844920c80d813f30f212a5dad0898a7f1a0e64247cc5dc2fd29b44fb17aecca. 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/PL2DY2301150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cf6c52d7f93fd14176b3a50ce8dfda147aba3036c6aef2277dcfce38b6aa64. 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/PL2DY2400113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29fa6595cd5c4c09e7487715f5f13bbcfb939ee3a177c8463ca07f01c6fb637c. 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/PL2DY2500452.