Dmitry Aleksandrovich Koldun (, Dzmitry Kaldun; ; born 11 June 1985) is a Belarusian pop singer. Koldun rose to fame through his participation in several Russian television talent shows. In 2006, he
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 0xcb8535694868dab685805181a340c6f10c9f41370ad6c086e59fee138f9897ce. 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/dde43eca-61ad-4f7e-940e-a3ccd01b123d.json and https://artists.proofprofile.net/proofs/artist/dde43eca-61ad-4f7e-940e-a3ccd01b123d.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 0xfe8203177c922f17695bb353aa41dfdf78f775d5d4418fe67ac4ff35d09abf00. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:56:00Z), 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/FR59R2054941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea6ef34b20ae75dcc6f35e27ef3b2ad68bd842065ffde63194a3241ef26075b. 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/RUA1D1808077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779f2f2086c2b14d03fd7265077590b8a08a4519539e037023f11077dcef0997. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:53:19Z), 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/RUA1D1807593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf216e669a3234869565e2ea66494849da212c6ca0c49a816e3cf8a694cb0f399. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:28:58Z), 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/RUA1D1807609.
В комнате пустой (GMmusic Dance Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41f96650b85824e319122f02131b9eef46cf123f5b34f4cde744b6f8e52bb48. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/RUA1D1807605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd18163827c2b91ac2e2d419fbc41b4c3c8f1d274d5690541aa6f653fff59180d. 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/RUA1D1807241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddbe3ac252aa893c44194e7158dc2d7cd2041373f3649105361c5661f5d95a24. 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/RUA1D1807245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa33eb13ed37638646b8f16bb8d739e919a7dfedbb25d8b80978f89bee6f9ac. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:53:23Z), 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/RUA1D1807239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf458ffab334d8a260fb7eb27a22a4caf44748be22e35aa1d6c679bb465311965. 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/RUA1D1807247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5564afc27340089e21407f721adf4df21b6a7fd504f71196577c85d609505ba. 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/RUA1D1807237.
Быть или не быть (Из сериала "Верни мою любовь")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b42b258e587d123288d5b79b1b820c32f6c905ac0b25e3e981a4815a7a2a922. 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/RUA591500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ea456b9ab6e5aa6daa29c0e6a179ef7f58ee310908d4ece829719013eca89b. 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/RUA591500445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8a3b8ec2c82be0075af71530d3d4d8ca758ea2571912b005b1cf368894feb2. 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/RUA591500448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0facc14ae9130f39247a22fdcd72f0e34ab4e3ef96d94db0d56b360c03ee3fe6. 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/RUA591500451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa62c9eab519c9e5d0e3b048866808f8fc313e23bf492a2af61ba2d66ae13fc60. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/RUA591801007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d176beb8226dd1482cb039aee9609f0f11578981666008467c3661d98ef1763. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/RUB422000381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabf7711319c7950db7d1f6cc809a076b146dd0e030ecf8550298c94c5a67775e. 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/RUB422002025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8ed02932e887876358d2ad6a991cb609f7995bdfe8d214e4f3e3c0f284ba80. 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/RUB422002494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc697bb6278233eb1a39bcc6e50ebedd8672ee0c23d8b2bb6e5dc2b6d21c92478. 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/RUB422103878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6ea54acfad2c08f974eb69e3e68c13a3fb137b9ed87fe3d0e6828306aca968. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/RUB422202253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05dbc02097bf847156b52a80608ac56877f8d6ac66de92da862029c5306a07a6. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/RUB422203725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb2316b67553ea1c57e9bb16f5ab7e5e32d702a2f5e4bef8b275c3f8b971b49. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T04:09:08Z), 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/RUB422301465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50865ba4bf252ba83db26ddbde789575353d5fc6299a5c9ff8e988619fd473f3. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/RUB422302847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb9731744d340a9acf08efa6e6e351f16f7372eb990b6dd9903699a9153f139. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/RUB422303247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc622dd83923f1faf444f0464ae0a53d412e28c2903ab19b44367fb8ee75f11d2. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:55:32Z), 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/RUB422400483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab52fe6d1b8079b574a10ed2384a8a3e08b5850d93c9c0f55ebec516655d3974. 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/RUB422400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14cd432dee6da6a0b8f40fdd694627692fdd33a847e4cb20d8128531999cd32. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/RUB422400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x866f92fd769a2e7327cf3ef085a0e6fe9df385cdd3634b96827a9107331f49b3. 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/RUB422400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c229f23239f2e6dbcfa786e414ab2b92d844680cd4c789ad2e7c57a7ed7e69e. 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/RUB422400088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11feab2ee9ad89c0b0b555d41b477073a203e23ae9c206b0d2a1487df907a750. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:34:13Z), 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/RUB422400489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd238bd2e927b441251636aaf9df203577417345c97e973dae64edd724c61f194. 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/RUB422400491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0c656f4895c09445eafbf03de8bb175c45e518d13f65e856d5959b1c73fc1. 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/RUB422401431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f3ffe2ab42f7e78335cf2c0687c8c5c2c7af1f1cedb3d5e9a7d08b91632032. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/RUB422402951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891625ec93302628d81862453ce3491401449a4eca8c91cea3fcc5863a48c0ee. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/RUB422404536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5212c27327b5ea38b302dc47204f4c1e5bf020beabc45d4ba213633d828733f. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T23:01:25Z), 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/RUB422502070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3b4bdcbcbc5ae53f4cc60f9fab691ffc341a3f1ac6ce496ae42e46fee409d6c. 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/RUB422505757.