A Decentralized Data Labeling Protocol on Solana
This project is a decentralized data labeling platform built on Solana using Anchor & Rust.
It enables task creators to post labeling jobs with escrowed rewards, contributors to submit annotations, and reviewers to stake SOL and vote on submissions.
Rewards are released automatically when the required consensus threshold is reached.
- Escrow Vaults – Rewards are locked in PDAs until tasks are successfully completed.
- Worker Submissions – Contributors submit data labels stored on-chain with metadata URIs.
- Reviewer Staking & Voting – Reviewers must stake SOL to vote; prevents spam and ensures accountability.
- Consensus-Based Approval – Contributions require majority approval (e.g., ≥60%) before payouts.
- Automatic Rewards – Payouts proportional to approved work units.
- TaskAccount – Stores task details, reward pool, and progress.
- ContributionAccount – Tracks worker submissions & work units.
- ReviewAccount – Created per reviewer; stores stake value and status.
- Reviewer_stake_vault - stores staked SOL of reviewer
- VoteAccount – Tracks votes per contribution (approve/reject, voters).
- Escrow Vault PDA – Holds locked rewards, only program logic can release funds.
create_task– Initialize a new task with reward escrow.submit_contribution– Worker submits labeled data + work units.reviewer_init– Reviewer stakes SOL and activates review rights.submit_vote– Reviewer casts approve/reject vote on a contribution.finalize_contribution– Distributes rewards when approval threshold is met.
- Rust + Cargo
- Solana CLI
- Anchor