x402 · DeSci · Base Mainnet
Field-attested
mineral intelligence
USGS benchmark data and empirically collected gravity separation run logs — paid per call, with on-chain provenance via EAS on Base.
What we provide
Two data products. One API.
Both datasets are rare: one authoritative, one empirical. Together they give AI agents and developers a data layer to reason about mineral economics and field recovery performance.
USGS Commodity Benchmarks
Official U.S. Geological Survey annual mineral commodity summaries for gold, silver, and copper. Mine production, reserve estimates, price data, and global context — machine-readable and x402-gated.
Ultrasound Run Logs
Empirical data from a 17-week field season using ultrasound-assisted gravity separation on a grooved stainless tray. Feed type, frequency, recovery rate, tray geometry — each run timestamped and attested on-chain.
On-Chain Provenance
Every data response includes an EAS attestation UID and IPFS CID. Verify the source data independently on easscan.org (Base network) — no trust required.
x402 Native Payments
No API keys, no subscriptions, no accounts. AI agents and developers pay $0.10 USDC per call on Base mainnet via the HTTP 402 protocol. Works with Claude Desktop, Cursor, and any x402 client.
How payment works
x402 in four steps
Call any endpoint
Your agent or app sends a standard HTTP GET — no auth header needed.
Receive 402
The server returns 402 Payment Required with a machine-readable USDC offer on Base.
Sign & send
Your x402 client signs the EIP-3009 authorization and sends $0.10 USDC on Base.
Receive response
The server verifies via CDP facilitator, settles USDC, and returns the full payload with EAS UID and IPFS CID.
Why it matters
Mineral data is scarce and siloed
USGS mineral commodity data is technically public, but it's buried in PDFs and annual reports that require manual extraction. No pay-per-call API. No machine-readable format. No provenance chain.
Field processing data — recovery rates, feed types, equipment geometry — is almost never shared. Small operators run experiments in isolation, with no accumulated public record that benefits the next person.
MineFlowTrack puts both behind a single x402 paywall with on-chain attestations, making mineral intelligence accessible to AI agents and developers for the first time.
The oldest and cleanest form of mineral beneficiation — no chemicals, no heat. Ultrasound-assisted processing increases fine gold recovery by disrupting surface tension in slurry feeds, particularly effective for placer concentrates below 100 microns.
Ethereum Attestation Service creates immutable on-chain records. Each run log attestation references the Pinata-pinned IPFS data, creating a verifiable chain from raw field observation to API response.
Quick start
Test the gate in 10 seconds
# Free — no payment required
curl https://us-central1-fourmonth-73efe.cloudfunctions.net/api/health
# x402-gated — returns 402 Payment Required (correct — gate is working)
curl -i https://us-central1-fourmonth-73efe.cloudfunctions.net/api/benchmark/copper
A 402 Payment Required on benchmark endpoints is correct. Use an x402-aware client to pay and receive data. Full API docs →