Mihaela Tinkova Fileva () (born May 15, 1991) is a Bulgarian singer-songwriter and dancer. Her career started in 2005 when she won the Bulgarian National Television show – “Hit Minus One”. Her big bre
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 0xbcdaa71bae1e91d24feb70983a4781db984560b6bd3e98675978cb3e0851f7b2. 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/0351deb8-ed4b-44cd-b781-f70a67e7e3ef.json and https://artists.proofprofile.net/proofs/artist/0351deb8-ed4b-44cd-b781-f70a67e7e3ef.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 0x4d1b595f509c3f324d89ad9aff96fb1a3e8efc630cd56d366fe31b17bd7eded9. 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/BGA671398796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3110665cdeca7454695e098ccdb1e28d8f54de553dc37e1b2a2a6e792544d05. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGA671541202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5c7faada6a710d72f20c5438b9a96e046fe871224643849fbcf025ff495abb. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/BGA671541205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839d401da2a83e5dd02fa1cfbd68a254c164b2305d9bdee9d41f09b2d1cf1f4c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGA671541206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc699651a4705ad7aaf8ccfd2d813a8d41dd157cccaf409371814b332f53318da. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:23:23Z), 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/BGA0P1800008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ae5739f1ebd82ebeb7388971159da5707e520999e276690d2ba04dc5c6fc7e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BGA0P1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc4272070831c80fe5f1f46d827ab81a633868fddd2006347ae919d5c4a2e0a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/BGA0P1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a387afc5745e6c8b92a9a9c841aabb6a5c8cfd9df8a35c458a9d41ab18a4b2. 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/BGA0P1800018.
Live at NDK 2019 - Bonus Tracks (Live - Bonus Tracks)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae78b9a1291d9b76dacd5e912946b16dc70b34c80fa2a9e4b16a5713c01108a2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:40Z), 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/BGA0P1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a0d059746b1a01fef9abc4ad85910e9f780ca836e2ff789a96613b97e69a1. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/BGA0P2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf418d546df5c576a47dc6780b18d105ae7d99b077cb921207ffd012bdd86a4. 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/BGA0P2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4af42e9ffbb20fb1b2c971c3445f6db0ba61daa284381efbb5fdc445febcda. 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/BGA0P2300023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f026f43209c295cd9b2ff03b7e72e77c2d60320f50289293b05afc1434f5f61. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:02:01Z), 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/BGA0P2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b4621794ea533afea01aef3631d40374ba60078d0ee3fd77fc423e5bd9776a. 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/BGA0P2300026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c5db878d089bd4ab08d9f5bd7a5b9995c6ada91b816a64fa0419911d25cb5e. 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/BGA0P2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe1700f5b7055cc6f31e85171911792ac9e40de43ea3fe75bb4f99cfa569731. 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/BGA0P2300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc2bbb31a307c6958c048e18d479eda3950ab1545428b7ce2d46e81a246a4e61. 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/BGA0P2300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0365a3c89f8a6515e4564363663fd300671dc3fb222139b9cf19347c6f26a66c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/BGA0P2300024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7a1689803d13c9b5def63a7bf61042ce04840f491317968a8a9d894968f681. 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/BGA332500031.