200 px|right|thumb|Sergei Kristovsky, 2009 Uma2rman (previously Umaturman, Uma2rmaH) is a Russian pop rock band made up of two brothers, Sergei and Vladimir Kristovsky. They have been active since 200
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 0xfe07641e36cb84b0ca973c0ef4b53b5a640e0dfdb18c5d40b1e51c97f26366bb. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/556b91b8-a2eb-41c9-b3fb-d21b593fb582.json and https://artists.proofprofile.net/proofs/artist/556b91b8-a2eb-41c9-b3fb-d21b593fb582.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 0x1a6f55f683be65e08ed698fa034774264eda97c277d79477cfd935b2add10ea2. 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/RUB421202270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162c9bfdcfcf8fc21aa24d1047399e495bd8c0646bd1fdadd97802e2fc3287ba. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:58:21Z), 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/RUB421202302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0ca702c3abced9880ec40498b1719dec7e58ade9ae0ca6b9590aaf9299b2c5. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/RUB421202300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b484cd14f9b4978197dafd3fb762308af72b20413c52fade7094f0809a4ab8e. 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/RUB421202310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe975ed7fde11d82d16f0b706a49a62360c1d1e089fba508147114236150d7369. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/RUA590400295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9f896fc033d7e139561dd51be76409ccaed3d38f3807d8e635c0ec0b5a64f3. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:35:33Z), 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/RUB421202267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f549a9d0d658e03e6aa06a4098e9846e2df5562e1710a7919656744900f4912. 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/RUB421202296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9f896fc033d7e139561dd51be76409ccaed3d38f3807d8e635c0ec0b5a64f3. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/RUB421202267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f549a9d0d658e03e6aa06a4098e9846e2df5562e1710a7919656744900f4912. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/RUB421202296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274f66af931be2907401ce31a259ea6ee0c5bc64020d389c64c21b61a981c589. 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/RUB421202290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08353382c1237d9817b4f9c52b49106f01542f9e268270bfd09d3d023bbfd2e. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/RUB421202278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e17c174086a8fe743ac0405c2c7695935032c060431bcd7fb181b52e6a715c. 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/RUB421202316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8befcf8c1a8bf1edff6b6af328ffa56f5802cff7d3af44cc248c973094ea057. 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/RUB421202326.
Kuda Privodyat Mechti (Куда Приводят Мечты)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc572e2f59c0e9e7b6eb11e987f5554f12b2ba106b6c2058490f9f0a3801abe. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:40:12Z), 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/USKEG0810147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc177d971ada198ae9ecfccdf9c3fe72f08d01f52230ef574394be6d5dd4bb9cd. 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/USKEG0810148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e9f69fe5ceb332079b60d59efc04a92856d6d9f6744e0296a13144bc514f5f6. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QMPU51287221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x520de63ebc7a26ac00527643588310d1a167663aadb7f9d86a102aad641f5fe9. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:29:30Z), 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/QMPU51287225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f05bc03659f396193e661dd4897a11124b544fbb1a4966ace613fcd4418646. 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/QMPU51288721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6677d43dad3365c698fd5e511216db250c97bd66f030f6e5b54948f5895e52a. 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/QMPU51520111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a89c6a3c276604da7d080effffc0fd58dbd78bbf86db66e3387a41d382745. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QMPU51520101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x948cc70c68423c7566303459813260e74a4a71a5b7b3f8d640031ca188fc32b3. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QMPU51520102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74dfad0ab864fdc1b04b8959ada94578170cb1902a61172019191b3d9bf106a. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QMPU51520110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9564563a4f64bbbf0c8888b4a8f546114718d5ccc165bd719e1f32d83e9c6e83. 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/QMPU51520103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1091ec8b269010c8e919f85b074f700a61843201f5ca44ea1835c62fc371419f. 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/RUA1D1611882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e712360fcb47012212df382246ea6e7a3cfd0c5096aec92b07a09d505484e8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/RUA1D1808951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfdb167737e700ee51a310355fecb60d39be386d44117b16afcb84a8c8ff4af. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:02:52Z), 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/RUA1D1808955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb1073ba75f23dd5a2ddf79d57879a7cb64f543788c181709d92930620b3fb. 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/RUA1D1808947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bf9aaa84479fa9baeedc60af70750c544fe7cbdee60494b3e9a7196034413b. 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/QMFMG1571796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeedcdf2f7d8576ace969f0cd16795adb8a813b93fed8870be4161aec4355e5f0. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:26:41Z), 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/RUA1D1815488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f630b456245543ae1e77fe76608cbaa75560fcb76df41775b7fad209789fd2. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/RUA1D1820240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8abe4dd1bb1765e478841615efdab2b5e6cc2bb54445fd002282abe19ac7b683. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/RUA1D1825332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91aa0a2a3d4d85a5f8bb1687632a6f812c0d96c20ebfbd016f3bd84442b9c968. 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/US7VG2039027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82434f851fea224b6db47ce4b24aa97bd50ffe0c32983eb2cb2884912c410575. 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/RUA1D2104013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e840618c3c902a674c476c75e546c42f24f1aae9d7acd614fdbe48d51ce3f3. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/RUA1D2113341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c39c377d6b2c2bc234a459cd458ef7d326f252f199ac8f42445de842c9f359. 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/RUB422103687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb459820285403a75474081914c11ef4eab4a33b14cc1b3b93d2c904a26fc020. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/FRX282392183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5505f4d41f1dc4f04e6b32bb399495b0f92ebba41e1aa1251f230f7cc88cec. 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/RUB422302654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53c892c5c5fd6400774970b75fa8c40022f4e8004bd8a6e33e2ff570ce8bb7bc. 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/FR2X42407347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3348df5803b2a13b9cc5f04e6d97ce6d11c124aa10c4f6981b62b16cbc2f5120. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:13:31Z), 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/RUB422404013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cad84cfa6f0e116a4feecb86dae429adc92eb95fb4e38dc248e34c8b7cce41f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:17Z), 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/RUAGT2578491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4f260506264d8a1a0b17409e2823cfceace8d43d48350d78c8fb46fca0949c. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/RUAGT2593895.