sat-diff

Fetches two 128×128 NASA GIBS Harmonized Landsat Sentinel-2 reflectance renderings for a coordinate window, decodes the PNGs locally and compares only pixels present in both dates.

Fetches two 128×128 NASA GIBS Harmonized Landsat Sentinel-2 reflectance renderings for a coordinate window, decodes the PNGs locally and compares only pixels present in both dates. It reports measured RGB change plus transparent colour-class heuristics for built-up, water/flooding and vegetation loss. HLS resolution is about 30 m; cloud, season, lighting and acquisition gaps can dominate differences.

UNRATEDListed

Overview

Grade?

UNRATED

0 of 30 paid calls toward a letter

Price

$0.015 per call

Paid calls

none yet

delivery unknown until someone pays

More info

Seller?

0x2880edff…771c4e5e

URL

https://natur.halowerk.com/v1/sat-diff

Seen

first 35 days ago · last 10 days ago

63 free handshakes

Payment

Pays through

x402

Offered on?

Base USDC

Listed on?

Base

Score, from free handshakes onlyweights 2026.09.6

UN
RATED

0.607 liveness verified, no letter

To a letter · 30 paid calls

0 of 30

Held down by latency p95 · gap to 1.000 is 0.393: 0.141 uncertain ? + 0.251 short ? · 0.043 to C

How the composite of 0.607 is made up, part by part
Component	Weight	Measured	Lower bound ?		Adds	Short ?	Uncertain ?
latency p95costs the most it answered as fast as its class	0.20	0.00	0.000		0.000	−0.200	0
liveness it answered at all	0.60	0.91	0.679		0.407	−0.051	−0.141
price stability the price stayed where it was listed	0.20	1.00	1.000		0.200	0	0
Composite	1.00		0.607	gap to 1.000 = 0.393 · 0.251 short · 0.141 uncertain	0.607	−0.251	−0.141

Not measured: correctness · nobody paid; honesty · nobody paid; schema conformance · no answer had a published shape to check

The multiplication, written out

  0.200 × 0.000   latency p95    
+ 0.600 × 0.679   liveness       
+ 0.200 × 1.000   price stability
= 0.607           → UNRATED: 57 of 30 paid calls      weights 2026.09.6 · 57 samples · seed cap_01M1A5QEYTG8QD01BHC54EVNMZ|2026-09-03T12:47:49.921Z|2026.09.6

Verify it yourselfnpx teppi-check https://natur.halowerk.com/v1/sat-diffcurl -s https://api.teppi.xyz/v1/trust/cap_01M1A5QEYTG8QD01BHC54EVNMZ