Sofiya Marinova Kamenova (, ), known professionally as Sofi Marinova () is a Bulgarian pop-folk and ethno-pop singer. She is often called "the Romani pearl" and "the Romani nightingale". In February 2
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 0xb5d02b66c3df4d9335ffb4837fae54cc7c545ac142fe639755b1035288c06c3e. 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/2c9ff3a9-852c-4038-a954-b508a5b26e57.json and https://artists.proofprofile.net/proofs/artist/2c9ff3a9-852c-4038-a954-b508a5b26e57.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 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 0x36c31ba4b4aa11c38b6a01848b4c60f8b68bf906de178b477b76ceca74571c0b. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/DGA052490606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e0e476f124d02547680463108eb0702c0d22297875bda11b37aa4488707d31. 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/BGA561100033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe72c1159e3363a7ae4de3715d99f8930d714464a3930def6306012c7156e3e66. 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/BGA561100317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0edca76ba5d89f194fcf75344ca24f817dad014aee04f05bc94cc0d1e0c740b. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/DGA052490612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e3562a670661b7d0665e7ba44d1fa1c5b9a20b393f1c943ed53603ea37474f. 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/BGA570400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e7d26d8384a5ac6e1ba7d35c93659b9bb5c7f9c28a6aa2e388225efef1543. 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/BGA570500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9120dd80c010175ad3f0e1267eb9231ae8780bfd44a7bf1784a2128d1edb096d. 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/BGA570500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5356510bfa2969ec122e0d55b24b5f0d0a1d3d45ba0466242c1b782679738c04. 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/BGA570500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722e7d26d8384a5ac6e1ba7d35c93659b9bb5c7f9c28a6aa2e388225efef1543. 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/BGA570500148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9120dd80c010175ad3f0e1267eb9231ae8780bfd44a7bf1784a2128d1edb096d. 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/BGA570500066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb847d949eff9112b38762b776dbb31e2ea01b0bbc934d9268d4e82448e7eb64. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T16:15:11Z), 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/BGA570500067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5356510bfa2969ec122e0d55b24b5f0d0a1d3d45ba0466242c1b782679738c04. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/BGA570500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da017d80c262609f81d1fc9e81844f3ba11de768aecd5a497cdd06c322ce8ef. 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/BGA570600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da017d80c262609f81d1fc9e81844f3ba11de768aecd5a497cdd06c322ce8ef. 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/BGA570600117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021ee60f4da8dc0db6abadb58c375aa8fde8c82dee182d51aae7f6c87aaa46a5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/BGA570600124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1041a2008d66b6f2aff69f9115f04be88a36e7fe375a0c89aa76d42c3cf44ac. 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/BGA570600125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3817755ece239e379ddfb2c4d68f91e4f5191bcbcba46ac0a899c8d4969e73aa. 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/BGA570800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a39562c59de2d6520e8229678bf7b43960dc7945b3a5e4e8cb30d903f9a4d3d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BGA570800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2bb0cfd86086acf1f028979c7fa0c4865d0fdada61c93dfa88118d10eddcd51. 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/BGA570800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6963e22aca4ac2546f9157341ef4c16ce5602d1c081e3cd490e62e348953fefa. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BGA570800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb67c49e251fc0e56f83e14ee0b421e1a9283847180a92edf7f4b9988da3534. 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/BGA570900014.
Love Unlimited - Rossko Guitar Mix ( Bulgarian Eurovision 2012 Winner Mix ) - Single
Love Unlimited: Rossko Guitar Mix (Bulgarian Eurovision 2012 Winner Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x096dd5a2af757109aa4c113440827b834e596c523051c9b3562a348294bbb383. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/BGA571300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e8dfde7dda22a15b49fdcd953b2de967a3eac580774036bf3156c04b5c14bf. 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/BGA571500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb92b4ecd58f510d29af2c98b39d7055e224b36acdc8f326736e307ab79bc3157. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/BGA561800047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be40f01062df5f1a12676af41f59005ee72c46bbc6225880c253898a7ac42f8. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/BGA562000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee59aa9e37e998a8dfdbccec35d8fbf3f865692b95ef96d189768ba113c73856. 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/BGA261581813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b4de5e8c2f3987bff7f1cfb5defdd77b41ed1a8a26d2fd2f57feef0f9b5db. 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/BGA261582667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4079d7c0fb93a4bd0590c1ad52be3821eadd9f18c658bf91362a6cdadf531111. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/BGA261583862.