← The evidence ledger
Evidence row 2972
Observed , by baseline/1.
- Kind
- listing
- About
- source_record agentic_market:natur-halowerk-com
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- cec9672ba3954482d08a191cc0f874500452409fa2ff71498176eaa46968af5c
- Leaf
- 0xe22172f03c83485defae442262839aac4c823fe16b79cab5d844c8114f5fd5bb
What was observed
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"description": "Returns a single earthquake in decision-ready form, either by its USGS event identifier or as the most significant event matching a search. Magnitude is reported with the magnitude type, because moment magnitude and local magnitude are not interchangeable at the edges of their ranges.",
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"description": "Turns an hourly forecast into the thing that is actually planned around: continuous frost windows. Each window carries its start and end hour, its duration, the lowest temperature within it and the hour that low occurs, so a two-hour dip at dawn is distinguishable from a night-long freeze.",
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"description": "Estimates how likely satellite navigation is to be degraded, keeping two distinct mechanisms apart. Ionospheric delay error rises with geomagnetic activity, affects single-frequency receivers far more than dual-frequency ones, and shifts the computed position without any obvious sign that something is wrong.",
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"description": "Accumulates growing degree days at a location from the hourly forecast, for a base temperature you choose. Two methods are returned side by side: the hourly integration, which is the more accurate, and the conventional average of daily maximum and minimum, which is what agronomic tables and most published thresholds are built on. Reporting only one would either be less accurate or incomparable with the literature, so both are given with the difference between them stated.",
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"description": "Computes reference evapotranspiration by the FAO-56 Penman-Monteith method from hourly forecast data, applies a crop coefficient, subtracts effective rainfall and returns the resulting daily water deficit and its running total. The method is named because it matters: a simple temperature-based estimate and Penman-Monteith diverge substantially in windy or dry conditions, and a number without its method cannot be compared with anything.",
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"description": "Takes one or more district metered areas, each with a flow series and optionally a pressure series, a metered consumption figure and a service connection count, and returns three independent leak indicators per area plus a ranking across all of them. The first is minimum night flow: the lowest flow inside the night window is taken for every night in the record, the median of those nightly minima is reported, and where a connection count is given the legitimate night consumption is subtracted so…",
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"description": "Looks a marine organism up in the taxonomically curated register rather than in an aggregator, and returns the accepted name with its AphiaID, the authority, the rank, the full classification and the recorded status. Where the queried name is not the accepted one, the accepted name is given together with the status term that explains why — unaccepted, alternate representation, nomen dubium and the rest each mean something different to a taxonomist and are passed through rather than flattened…",
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"url": "https://natur.halowerk.com/v1/marine-species"
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"description": "Queries the Sensor.Community live area feed, keeps the newest noise reading per outdoor sensor within the requested radius, and returns nearest readings plus median, p10 and p90 LAeq. It never converts missing sensors into an estimated dB value. Community sensors are indicative rather than calibrated regulatory measurements; no day/night legal limit or property valuation is inferred.",
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"description": "Compares the recent record of a gauge against its own longer history and reports three kinds of finding, kept separate because their causes differ. An extreme level is a reading in the top or bottom percentile of the reference period. An unusual rate of rise is a change per hour exceeding the station own typical rate by a stated factor — this is the figure that matters in a flood and it leads the level rather than following it, so it is reported even when the absolute value is still ordinary.",
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{
"description": "Returns the latest instantaneous values at a USGS streamgage, together with what makes them readable. A stage of three point four feet means nothing on its own, so each value is placed against the station own record for the requested reference period: the minimum, median and maximum, and the percentile the current reading falls at. The reference period is stated with the comparison, because a percentile without a window is not a statistic.",
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{
"description": "Combines the current wind at an airport with the bearings of its runways to give, per runway direction, the headwind or tailwind component and the crosswind component. Runway geometry comes from OpenStreetMap, where runways carry an explicit bearing or one derived from their designator, and both the source and the derivation are stated per runway because a designator gives the bearing only to the nearest ten degrees.",
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"quality": null,
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},
{
"description": "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.",
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"example": "2026-08-07",
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},
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},
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"url": "https://natur.halowerk.com/v1/sat-diff"
},
{
"description": "Builds a monthly profile of when a species is recorded near a point, from historical occurrence data, and corrects it for observation effort. The correction is the substance of the service: raw monthly counts follow the observers, who are outdoors more in May than in November, so an uncorrected profile makes almost every species look like a spring species.",
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},
{
"description": "Retrieves the earthquakes within a radius and time window of a point and turns them into an exposure figure. Each event contributes according to its magnitude and its distance, using an explicit formula that is returned with the result: energy scales exponentially with magnitude and attenuates with distance, so a distant large event and a near small one can contribute comparably, which is the behaviour that makes a single count useless.",
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"tags": [],
"url": "https://natur.halowerk.com/v1/seismic-proximity"
},
{
"description": "Assembles the current state of geomagnetic activity from four NOAA sources and says what each one is good for. The planetary Kp index is the standard scale and maps to the G-scale storm levels, but it is computed from ground magnetometers and therefore describes a storm that has already arrived.",
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"url": "https://natur.halowerk.com/v1/solar-storm"
},
{
"description": "Retrieves occurrence records for a species within a radius of a coordinate and returns each with what makes it usable or not: the observation date, the coordinate uncertainty in metres, the basis of record — whether it is a preserved specimen, a human observation or a machine detection — the publishing dataset, and the licence of that record.",
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"providerName": "",
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},
{
"description": "Takes a scientific or vernacular name and returns the accepted taxon it belongs to, with the complete classification from kingdom down to species, the taxonomic authority, the GBIF key and any linked identifiers. The distinction the response keeps is the one that matters for anything downstream: whether the name you supplied is the accepted name or a synonym, and if it is a synonym, what the accepted name is.",
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},
{
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{
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},
{
"description": "Retrieves water quality results for a monitoring site from the Water Quality Portal and normalises them into a comparable shape. The real work is units: the same measurement appears there as mg/L, ug/L, ppm and mg/l in mixed case, and combining them unchecked puts factor-of-thousand errors into any statistic built on top.",
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],
"enriched": false,
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},
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},
"source": "agentic_market",
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}What the leaf hashes
{"body":"cec9672ba3954482d08a191cc0f874500452409fa2ff71498176eaa46968af5c","id":2972,"kind":"listing","method":"baseline/1","observed_us":1793025268837011,"prev":null,"subject":"agentic_market:natur-halowerk-com","subject_kind":"source_record"}Proof
Fold these into the leaf in order, hashing each sorted pair with keccak256, to reach the root of (296695 rows).
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- 0x9b9ce5b74b9bab5121612ef6b64920a8d453cbf311096a423eef9702747e868a
- Day root
- 0xf43e8dcc3d451a4788b26be904c55e8c4c0fa75c9666796c51db38d37e2c0df8
- Chained
- 0x702d5ac508f08b0d1accf36af25822d8e5660367494edd17a642fb61e158a57a
- Published
- On Arc Testnet, block 69251483: 0x495162f8936e19f0039918feebe6c307f327cd6bf8c37219620b1970041fa9ae