Ebru Polat (born Filiz Sarıkaya, 30 June 1983) is a Turkish pop music singer. Early life Ebru Polat was born on 30 June 1983 in İzmir. She took ballet lessons at a young age. While in primary schoo
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 0xf5422b366a1593771243472eaff4c150dd02e85af23ada05fe0fd3ee65b02623. 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/6c4b8183-0244-426c-8e05-d291cd09faf8.json and https://artists.proofprofile.net/proofs/artist/6c4b8183-0244-426c-8e05-d291cd09faf8.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 0x3ed7f2668e95c67442de687ce9bac4c4ffe40deee110485702d370ea58f46352. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/TR4170700016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8414a69fc949c0806598a0521ee2b807fdb37a9a77bb0b0e8770dccc003bbfed. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/TR4590800963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172be5e0f2bbfc0efe22b6defefcc27778d58fbf677a971d6fa7ae9521ccf411. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TR4590901385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9415dcbbb3c6e23906941288a177ad2d9324ae447645db6a4560b914f1c4fb1. 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/TR4590901386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85727afe0dc130d6aa96de0756bf4453e643995d467e24fe30b303a95581013c. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/TR0061000058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85407a7c9bc50d79ac508e9df3e1ab943d7c5b7207b3753c8c2aee1642fd8a1. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:55:39Z), 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/TR0061000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96943e86041326ec3a5a8e77c426cb82a1d0867635fb1cf6608ad89b64cdcbfa. 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/TR0061000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d08ed3dec9eae3e07249e0287fc5d47a9615a96f1e1fa9d27e02c2f543909d6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TR0061100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8ad7fc8297fb7f25d7a4b7f5aeeb4fec2bedbb026d52d164eaa8803315b2d8. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TR8221200189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a11e873017679b5a8d2678aa4668e0313473e54ace487d87b80704b1aa65196. 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/TR0151800086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b72f1dbe520d6dc2df80872934b3d4821282cb5a4be247bd713e0c50254667. 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/TRBPU2000553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d1c22f02147da07ed5b3b758e7e63de7b52609b9c7f00b7a7bde5559b4232b. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/TRBTU2100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887fa3f14423fd8866c407b8eaea51c2e8ed16323b29d35b02a895626e30d822. 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/FRX452545206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b6c08896a0201171a49ddccc256a9153880c7bbc3e24f4558bd34705e22271. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TR0061000060.