← The evidence ledger
Evidence row 123941
Observed , by baseline/1.
- Kind
- listing
- About
- source_record x402_bazaar:https://waterpulse.theaslangroupllc.com/api/water/streamflow
- Recorded
- Previous row
- None: the first of its kind about this subject
- Body SHA-256
- 68b6be2966818da6fc0edaf7d079fbd8a51bc371af4b6e8d484e1e80fd989d20
- Leaf
- 0x7d4b9ed12c1107775abe0d5f1d57048d369851623cfb7eec223163cbfedd1659
What was observed
{
"endpoints": [
[
"x402",
"https://waterpulse.theaslangroupllc.com/api/water/streamflow"
]
],
"name": "WaterPulse",
"owner_address": "0x50ab2018c06c6e4eaa9ba52057eb55ed284912fc",
"raw": {
"accepts": [
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:8453",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x833589fCD6eDb6E08f4c7C32D4f71b54bdA02913",
"extra": {
"name": "GatewayWalletBatched",
"verifyingContract": "0x77777777dcc4d5a8b6e418fd04d8997ef11000ee",
"version": "1"
},
"maxTimeoutSeconds": 604900,
"network": "eip155:8453",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "EPjFWdd5AufqSSqeM2qN1xzybapC8G4wEGGkZwyTDt1v",
"extra": {
"feePayer": "BFK9TLC3edb13K6v4YyH3DwPb5DSUpkWvb7XnqCL9b4F"
},
"maxTimeoutSeconds": 300,
"network": "solana:5eykt4UsFv8P8NJdTREpY1vzqKqZKvdp",
"payTo": "985iFjbnGQ3dJcwXnfRCMSrH4Jnc3kW1N6msR64B5KX1",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x3c499c542cEF5E3811e1192ce70d8cC03d5c3359",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:137",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0xaf88d065e77c8cC2239327C5EDb3A432268e5831",
"extra": {
"name": "USD Coin",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:42161",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x79A02482A880bCe3F13E09da970dC34dB4cD24D1",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:480",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x754704Bc059F8C67012fEd69BC8A327a5aafb603",
"extra": {
"name": "USDC",
"version": "2"
},
"maxTimeoutSeconds": 300,
"network": "eip155:143",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "0x779ded0c9e1022225f8e0630b35a9b54be713736",
"extra": {
"name": "USD₮0",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:196",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
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{
"amount": "50000",
"asset": "0xb88339CB7199b77E23DB6E890353E22632Ba630f",
"extra": {
"name": "USDC",
"version": "2"
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"maxTimeoutSeconds": 300,
"network": "eip155:999",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "31566704",
"extra": {
"feePayer": "ZMFK2OI7ZBD2U27ISERZC4S6LKM6WMFJPZQ4MYNJDZ2VNBNMBA67RA22AA"
},
"maxTimeoutSeconds": 300,
"network": "algorand:wGHE2Pwdvd7S12BL5FaOP20EGYesN73k",
"payTo": "62A253YPATFNJCPRKID3FKD77MYJFNTVRYRP4B4JWG36EGLPY7UXFWGI7I",
"scheme": "exact"
},
{
"amount": "50000",
"asset": "XRP",
"extra": {
"invoiceId": "220F4D9E675747C9BAFF3B487F51FF05",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
"scheme": "exact"
},
{
"amount": "0.05",
"asset": "524C555344000000000000000000000000000000",
"extra": {
"invoiceId": "31912F6338164245BD971163F2220182",
"issuer": "rMxCKbEDwqr76QuheSUMdEGf4B9xJ8m5De",
"sourceTag": 804681468
},
"maxTimeoutSeconds": 300,
"network": "xrpl:0",
"payTo": "rMnHeutYALco8RYFVcmuU4BCgSzBpPEh32",
"scheme": "exact"
},
{
"amount": "50000000000000000",
"asset": "0x8d0D000Ee44948FC98c9B98A4FA4921476f08B0d",
"extra": {
"assetTransferMethod": "eip3009",
"name": "World Liberty Financial USD",
"signerAddress": "0x34F7a661160780Ce1346e6D7B96D2bE244590899",
"version": "1"
},
"maxTimeoutSeconds": 300,
"network": "eip155:56",
"payTo": "0x50ab2018c06c6E4eAA9BA52057Eb55eD284912fc",
"scheme": "exact"
}
],
"description": "Real-time streamflow for water and hydrology agents. Returns current flow conditions, flood-stage context, and low-flow drought signals from USGS gauge stations.",
"extensions": {
"bazaar": {
"info": {
"input": {
"method": "GET",
"queryParams": {
"lang": "en",
"limit": "10",
"site": "09380000",
"state": "CO"
},
"type": "http"
},
"output": {
"errors": {
"400": {
"description": "Invalid or missing parameter(s). Returned before the payment gate on paid requests, so a malformed call is never charged. JSON body: { error: <what is wrong and how to fix it> } plus usage hints.",
"example": {
"error": "invalid request"
}
},
"402": {
"description": "Payment required — x402 v2 challenge; the accepts array lists scheme, network, and amount. Retry the same request with a PAYMENT-SIGNATURE (v2) or X-PAYMENT (v1) header. Verification is free."
},
"500": {
"description": "Unexpected server error. If a payment settled without a usable result, contact info@theaslangroupllc.com with the settlement tx hash for a re-run or credit.",
"example": {
"error": "upstream_failed"
}
}
},
"example": {
"data_source": "USGS Instantaneous Values Water Services",
"flow_summary": {
"lowest_flow_site": "Arkansas River nr Pueblo — 34% of median",
"sites_above_normal": 1,
"sites_below_normal": 8,
"sites_in_flood": 0
},
"query_summary": {
"parameter": "discharge_cfs",
"sites_analyzed": 10,
"state": "CO"
},
"signal": "Widespread below-normal flows across Colorado indicate ongoing drought stress. No flood risk at monitored sites.",
"stream_readings": [
{
"date_time": "2026-06-07T14:00:00",
"discharge_cfs": "8420",
"flow_condition": "Below normal",
"percent_of_median": 61,
"site_code": "09380000",
"site_name": "Colorado River at Lees Ferry, AZ"
}
]
},
"type": "json"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"input": {
"additionalProperties": false,
"properties": {
"method": {
"enum": [
"GET",
"HEAD",
"DELETE"
],
"type": "string"
},
"queryParams": {
"properties": {
"lang": {
"description": "en | es | fr | de | ja | zh | ko | pt | ar (default: en)",
"type": "string"
},
"limit": {
"description": "5 | 10 | 20 (default: 10)",
"type": "string"
},
"site": {
"description": "USGS site number (optional) — e.g. 09380000 (Colorado River at Lees Ferry)",
"type": "string"
},
"state": {
"description": "Two-letter US state code — e.g. CO | OR | TN | NY",
"type": "string"
}
},
"type": "object"
},
"type": {
"const": "http",
"type": "string"
}
},
"required": [
"type",
"method"
],
"type": "object"
},
"output": {
"properties": {
"errors": {
"additionalProperties": {
"properties": {
"description": {
"type": "string"
},
"example": {
"type": "object"
}
},
"required": [
"description"
],
"type": "object"
},
"description": "Documented error responses, keyed by HTTP status code",
"type": "object"
},
"example": {
"type": "object"
},
"type": {
"type": "string"
}
},
"required": [
"type"
],
"type": "object"
}
},
"required": [
"input"
],
"type": "object"
}
},
"builder-code": {
"info": {
"a": "bc_gxy6qn5p"
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"additionalProperties": false,
"properties": {
"a": {
"description": "App builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"s": {
"description": "Service builder codes",
"items": {
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
},
"type": "array"
},
"w": {
"description": "Wallet builder code",
"pattern": "^[a-z0-9_]{1,32}$",
"type": "string"
}
},
"type": "object"
}
},
"reconciliation": {
"info": {
"category": "Software > Data & APIs",
"memo": "PulseNetwork WaterPulse /api/water/streamflow: pay-per-call data API, 1 request, USD 0.05. Seller: The Aslan Group LLC.",
"receipt": {
"format": "ISO 20022 camt.054-style XML+JSON, Ed25519-signed, deterministic",
"obtain": "GET https://onchainpulse.theaslangroupllc.com/api/iso-receipt?tx=<transaction from PAYMENT-RESPONSE>&chain=<base|solana|ethereum|polygon|arbitrum|optimism|bsc|avalanche|robinhood> (x402, USD 0.05)",
"verify": "https://onchainpulse.theaslangroupllc.com/verify.html"
},
"seller": {
"brand": "PulseNetwork",
"catalog": "https://pulse.theaslangroupllc.com",
"legal_name": "The Aslan Group LLC"
}
},
"schema": {
"$schema": "https://json-schema.org/draft/2020-12/schema",
"properties": {
"category": {
"type": "string"
},
"memo": {
"description": "Seller-provided reconciliation memo for this purchase. Pass it to your payment tool where one is accepted (e.g. the memo input of Ramp pay-with-x402).",
"type": "string"
},
"receipt": {
"properties": {
"format": {
"type": "string"
},
"obtain": {
"type": "string"
},
"verify": {
"type": "string"
}
},
"type": "object"
},
"seller": {
"properties": {
"brand": {
"type": "string"
},
"catalog": {
"type": "string"
},
"legal_name": {
"type": "string"
}
},
"type": "object"
}
},
"required": [
"memo"
],
"type": "object"
}
}
},
"lastUpdated": "2026-10-16T08:58:31.846Z",
"quality": {
"l30DaysTotalCalls": 2,
"l30DaysUniquePayers": 2,
"lastCalledAt": "2026-10-16T08:58:31.667Z"
},
"resource": "https://waterpulse.theaslangroupllc.com/api/water/streamflow",
"serviceName": "WaterPulse",
"tags": [
"streamflow",
"usgs",
"river-discharge",
"flood-stage",
"water-agent"
],
"type": "http",
"x402Version": 2
},
"source": "x402_bazaar",
"summary": "Real-time streamflow for water and hydrology agents. Returns current flow conditions, flood-stage context, and low-flow drought signals from USGS gauge stations."
}What the leaf hashes
{"body":"68b6be2966818da6fc0edaf7d079fbd8a51bc371af4b6e8d484e1e80fd989d20","id":123941,"kind":"listing","method":"baseline/1","observed_us":1793025623906876,"prev":null,"subject":"x402_bazaar:https://waterpulse.theaslangroupllc.com/api/water/streamflow","subject_kind":"source_record"}Proof
Its day has not closed yet. A day closes ten minutes after midnight UTC; the proof appears here then.