Before beginning work on the bounty, you must submit a proposal. Only if your proposal is accepted will you be able to claim the reward of the bounty. Your proposal should include time that it would take for your to complete this bounty. There should be at most 1 week between proposal is accepted and you start working on the bounty.
Description Light client for NEAR is relatively cheap in verifying, outside of set of ed25519 signatures of block producers. Compressing the light block verification to just verifying of a single proof would provide a useful tool to sync blocks faster and use it in the Rainbow bridge.
Context NEAR's light client specification is described here: https://nomicon.io/ChainSpec/LightClient.html