Lubomir Tsvetanov Kirov () is a Bulgarian pop singer and music producer. He was formerly the lead singer of the band Te and was a member of the jury in the second and third season of music show X Fact
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 0xa0144e33551442695362ad5381e2a6f209171419d40fe226f937f4a4493ecb56. 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/ab77b673-a563-4673-8549-2d0d063a5e94.json and https://artists.proofprofile.net/proofs/artist/ab77b673-a563-4673-8549-2d0d063a5e94.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 0x4b5b6355988fbbff8a52450294f3adab62a241161321f24f7226adfce018ef73. 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/BGA271700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe271765f302581f8eda0e50dfc3c1b9e555922f8b95de8f00a08fbd015ac8bf8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BGA271700012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacc26eea2fee78c8d08529f5a420740527d2a0d8110b02d9475dc60c62689ac. 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/BGA271700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb093e2f58d6f04119175db7c711789512128a6657cbd30f66e7a9dba346c12. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:42:02Z), 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/BGA271700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef31f259e7f57f5da25a1766ab1386191aab283e34ae633ed2fa5188e00239e9. 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/BGA271700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c301e976ffc29fecd5d27d473c8b5d7fd76c58da3188ad0864cf10bba5a03c7. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:07:49Z), 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/BGA271700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2edf6338ae002c0178b856520c34fdaa74908765b392838db59ef73c018d90. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BGA271800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b35e4ba63a0add56c1393f7640729202f1c138ce40bb6fe4a19869194bcb72. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:25:26Z), 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/BGA271800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ee5d7f5863bb71ad9e6eeb97ca049bb463f9c8696e9e6651c43b1501b9005d. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/BGA271800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb8323ab9bdb0c5daf459e635943c7a06328d744550b32229741c0c01eed3f1. 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/BGA271800019.
Ti mojesh (Marten Roberto & Nikolay Remix)
Ти можеш (Marten Roberto & Nikolay Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf213465cdee6e80725287a6475baf7e4aa371eb197addec830c8a0da7abf7d6. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:47:56Z), 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/BGA2Q2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf911c71d79bc2145eca0327cb4bb0f93e9637ca05a7e9a8164b23b7c977653d4. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/BGA2Q2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb6659d2550eee050a789aa1c6b75d4b99e8648c254330a7dad0d44e2ba47c9. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/BGA272000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a1fcd0214dcb87fcb8259088d6c26faad8a2d4b4797cf7ab8524bacfd841ef. 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/BGAOP1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13e10b2ef01c3e705fd707f2b92732199cf91e5752cec3a7b0c5c0df46e380f. 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/BGA321900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a3126d996cb8d900fa965e0b1e551477141ac18fe883ed394c5fa2080bf0f8e. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T01:41:07Z), 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/BGA272200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fba4f775f80389cc9dd297e2057ec9bc035fb685dd30abcff550ac734b8db3f. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA2Q2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a41356d30800e471a1546a4687b63c3128228e9d54c79fed2cf0b17c0bedaa9. 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/BGA2Q2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8561cc875228cd0f38e8134298057318d94fe92b543e1b175d46fda96d433477. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:28:26Z), 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/BGA2Q2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fba4f775f80389cc9dd297e2057ec9bc035fb685dd30abcff550ac734b8db3f. 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/BGA2Q2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec89518217319421ff4be3cba8962a2202fbb46cf556b009315a5dd7bf7284af. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/BGA2Q2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8581e12765af04f1299477aec310498c1f789055a4193b8e033744a304557a0b. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/BGA7C2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd627b5e4186c219e4328fdfe5a2fe529882f2f183ce703e40d84dcdce34e8f. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/BGA2Q2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec89518217319421ff4be3cba8962a2202fbb46cf556b009315a5dd7bf7284af. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/BGA2Q2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba404114083f1496cd07a77286be4f3f7daa5bd7c5cf2f119fd30b709f7329e. 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/BGA2Q2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba404114083f1496cd07a77286be4f3f7daa5bd7c5cf2f119fd30b709f7329e. 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/BGA2Q2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3781c3c0e1b920bd23622f6b257d439555cef6869348bcd6f320a33f5b3ed7. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/BGA261579396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13e10b2ef01c3e705fd707f2b92732199cf91e5752cec3a7b0c5c0df46e380f. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:39:20Z), 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/BGA321900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5759b4db31ba7fc6a5eb2a5c1535de5aceab3e6716b28c0313c54d502c770f. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:47:57Z), 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/BGA2Q2500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd627b5e4186c219e4328fdfe5a2fe529882f2f183ce703e40d84dcdce34e8f. 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/BGA2Q2400003.