Centient

What it is

A two-sided data-labeling marketplace that pays people in USDC on Stellar to teach AI what “better” looks like. A contributor compares two AI responses, picks the better one with a one-line reason, and earns a micro-reward (0.05 USDC); AI labs fund campaigns and export clean, quality-controlled datasets.

Value

• AI labs get neutral human preference data — the RLHF fuel worth $1–10 a datapoint — with quality engineered in.
• Contributors in emerging markets earn real dollars from a phone, cashable to local currency via Stellar anchors.
• Stellar gains a non-speculative flow: net-new wallets, real USDC velocity, every payout verifiable on-ledger.

Technology highlights

• Stellar micropayments, accumulate-then-withdraw — sub-cent fees make paying five cents at a time viable; earnings settle on-chain once at cash-out via a payout worker and reconciler.
• Engineered quality and anti-fraud — hidden gold-standard tasks, inter-annotator agreement, reason-spam and bias guards, prepaid campaign budgets.