Jeannie Ng Ka-yan (; born 6 September 1998), better known by her stage name Kayan9896, is a Hong Kong singer. She is known for appearing on a video of the YouTube Channel Trial & Error, appearing on V
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 0x1225ecff3db2bdd8989aeb817d3f1c367080e556e5a72c30532e9124a60aa501. 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/c5823a87-f5f9-4a8a-b7d0-32fff4c0adf3.json and https://artists.proofprofile.net/proofs/artist/c5823a87-f5f9-4a8a-b7d0-32fff4c0adf3.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 0xc95b339a8e228837653f3c4da2ec4a40cf880cecaf7d63c83f4daddb2b4c04b3. 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/QZES92247649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f46f7b63f6a30abdd33f9f94932a8811ebc80fac0a885477bc30a7e0a676b17. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/QZNWT2298928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20334151a61a1c3c32ade0be39cccf2b95565a41de443206fed044317662ecb. Chain 2 (Bitcoin): anchored in block 957541 (2026-07-11T08:23:18Z), 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/QM4TW2381086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a34830587b8de36728df71bfd5e6470ef54872574f8400e76b6a194a2b37ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI492253203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aeba9580c04b022788fdec75e921d9b2ee97c23f5fabd65b3809d548c3f86f9. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/HKH142108001.