Live on mainnet
Oracle
A physical device with a unique, unclonable silicon identity signs a real-world data point, stamps it with a timestamp generated from real electrical noise, and records it permanently — so anyone can verify it actually happened, without trusting a company or a database.
Today, when a company says "this data is real" — the price of oil, how much rain fell on a field, how much energy a solar panel produced — you have to trust that company. There's usually no independent way to check.
Lindblad nodes carry a "digital fingerprint" burned into their chip at the factory — impossible to copy, even by the manufacturer. When a node signs a measurement, that signature can only have come from that exact piece of hardware, at that exact moment.
→ The result: data that arrives pre-verified at the source, by physics — not by trust.
Live Demo — Recorded On-Chain Today
🛢️
Real-world data
EIA.gov (US Gov)
→
🔏
Signed by
physical hardware
→
⏱️
Timestamped by
electrical noise
→
Source
EIA.gov (Cushing, OK)
Signed By Device
LD95A821D
Device Fingerprint (PUF)
95A821D9AC091073
Physical Timestamp Nonce
AF6944A5
Attestation ID
05def9656afa
// Verify Independently
You don't have to trust Lindblad. The signature above can be verified mathematically by anyone, using the device's public key — which is itself public.
GET https://lindblad.io/node-keys # public keys of all nodes
GET https://lindblad.io/verify-l2/0e8029bb # verify this attestation
The verification reconstructs the exact message that was signed, hashes it with SHA-256, and checks the ECDSA signature against the device's P-256 public key. If anything has been tampered with — the value, the timestamp, the device identity — the check fails.
Closed-Loop RWAFi
Live on mainnet
The Lindblad stack does not stop at attestation. The same physical signature that proves a real-world measurement can mint a token representing that quantity, which becomes tradable on LindFi within minutes. Attest. Mint. Trade. All in one verifiable layer. Below: real values pulled from the Spectral Ledger right now.
01 · Attest
Physical measurement signed
— kWh
Solar generation, signed by silicon
→
02 · Mint
Tokens minted to producer
— GREENKWH
Producer-controlled percentage of attested generation
→
03 · Market
Liquid market established
$— / kWh
Pool GREENKWH/USDT on LindFi
→
04 · Settle
Latest swap executed
— GREENKWH
Real settlement on the Spectral Ledger
How It Works
01
Measure
A node reads a real-world value — a price, a sensor reading, a meter pulse.
→
02
Sign
The node signs it using a key derived from its unclonable silicon identity.
→
03
Timestamp
A physical noise circuit stamps the exact, unrepeatable moment.
→
04
Record
The attestation is written permanently to the Spectral Ledger.
→
05
Verify
Anyone can mathematically verify the signature against the node's public key.
→
06
Tokenize (optional)
A verified measurement can mint a tradeable token — same engine as PYCO.
Applications
🌱
Agriculture
Soil moisture and weather sensors attest field conditions — enabling automatic insurance payouts and verified crop origin, with no adjuster visit.
"Plot #4 stayed below 30% moisture for 14 days → payout triggers automatically."
⚡
Energy
Smart meters and solar inverters sign their own generation data — turning verified clean energy directly into tradeable credits.
"Inverter #112 generated 47.3 kWh → mints 47.3 GREEN-kWh tokens."
⛏️
Mining & Resources
Extraction sites attest volume and location at the source — giving buyers and regulators verifiable provenance for critical minerals like lithium.
"Site #7 extracted 12.4 tons at (lat,lon) → provenance chain begins here."
📦
Real World Assets
Condition and location sensors continuously re-verify physical collateral — closing the gap where tokenized assets are checked once and never again.
"Warehouse sensor confirms goods present → collateral remains valid."
📺
Verified Ad Delivery
Devices sign "this content was displayed, here, now" at the hardware level — addressing ad fraud at its root, not just its record-keeping.
"Device #X displayed ad Y at 14:32:08 → signature impossible to fake."
🛢️
Commodities
Live market data — oil, gas, metals — physically signed and timestamped, providing a decentralized alternative to centralized price oracles.
"WTI = $95/bbl, 2026-06-08 → attested by LD95A821D." (shown above, live)