Cavidan Yonca Lodi (née Akçakoca; born 17 September 1974) is a Turkish pop music singer. Life and career Cavidan Yonca Akçakoca was born in Istanbul and spent most of her childhood in Beşiktaş. She
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 0x0026b9fa317b3b57aff75bd75dafcd6c5d28dd678be5433ca297e758ce94cca4. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/37ffe019-6b12-4fd7-af6d-133de77ba8c5.json and https://artists.proofprofile.net/proofs/artist/37ffe019-6b12-4fd7-af6d-133de77ba8c5.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 0x98a96a2e8dd241ef38e92682ddc8754065192d15ffcdac5391c354247280f3aa. 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/TRA160000789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7aeb6db0805fea23dd4cd7eff8b53990ee7c81d109b60afbdcf177ac8e2249d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:30Z), 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/TR0110700473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400a99182a6f61ae91172bbd1ee19f612e3dfc55c43b8e6fb972753142885304. 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/TR0110900732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd910deb2768de302b6638c2542cc805847a1f9f021eada35a3a296200c28729a. 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/TR0111000788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c8ab401368a7cbb80119022099ebb7870616bb711246cb49e0f504370f61a6. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR0110800612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7569d864377d988ee7ffcb1e494f7da5d873baf68489bcc3352c8a6506077efc. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/TR0111000770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc69e58408b6f4e39e0ddc33ccd20edebaf54b7a3abb2779f813c5b1e963785b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TR0110900731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0bbb08f27375c50dd7246e97b26eab2f23309b48aaf3c8c7f8d5dfda5369550. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/TR0111401377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf836b9a650b3638801e28b0e7b321a8ce720314e949920f7e7a2e49a4f0fd8ed. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:00:44Z), 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/TR0111401380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b67821d21ef162b299e25d6c8650944ea154ae237aa8f2e8045af61043735fa. 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/TR0111201187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95a5a15ffe2cebff99c164602a1f0f02e67bbb68a789d9c18670a5d5ec68aca. 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/TR0011700250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596f1cc2090f8fe778be5ca16790d79fb3ad9c0b2a36ba9d8e4ebdcd13c93068. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TR0011800529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x684ffc80068cc60b7656b51f27cf7fc89f481093f9c028707456d09188844b4e. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T15:07:13Z), 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/TRBZL2100633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b13d3a15d2580271f1a1cab9adf7abf20f831b5825b981030a18f5f6c015355. 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/TRBZL2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a31551006c2accc6ca3e9215116671e9ff3efae86918c0ec5c3ff579472dff. 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/TR0531605732.