Create forecast receipt
curl --request POST \
--url https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof \
--header 'Authorization: Bearer <token>'import requests
url = "https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof"
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, headers=headers)
print(response.text)const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
fetch('https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof"
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"data": {
"provider": "vbase",
"schema_version": "quantura_forecast_proof_v1",
"status": "stamped",
"content_cid": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"receipt": {
"object_cid": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"set_cid": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
"transaction_hash": "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
"user_address": "0xdddddddddddddddddddddddddddddddddddddddd",
"chain_id": 8453,
"timestamp": "2026-10-09T14:20:00Z"
},
"error_code": null
},
"meta": {
"api_version": "v1"
}
}Forecast
Create forecast receipt
Automatically attempted when a signed-in user’s forecast completes or a guest forecast is saved. This explicit operation stamps older forecasts or retries an unavailable receipt. Sends only a salted SHA3-256 content ID to vBase; no CSV or forecast contents are uploaded. A fenced lease and lookup-before-create prevent duplicate stamps after ambiguous network failures. The receipt records the actual stamp time, including for historical replays. No forecast is backdated. Guests cannot stamp. The caller needs forecasts:write and forecast.create permission for this resource. Completed receipts cause no further database writes.
POST
/
v1
/
ensemble-forecasts
/
{forecast_id}
/
proof
Create forecast receipt
curl --request POST \
--url https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof \
--header 'Authorization: Bearer <token>'import requests
url = "https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof"
headers = {"Authorization": "Bearer <token>"}
response = requests.post(url, headers=headers)
print(response.text)const options = {method: 'POST', headers: {Authorization: 'Bearer <token>'}};
fetch('https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof', options)
.then(res => res.json())
.then(res => console.log(res))
.catch(err => console.error(err));<?php
$curl = curl_init();
curl_setopt_array($curl, [
CURLOPT_URL => "https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof",
CURLOPT_RETURNTRANSFER => true,
CURLOPT_ENCODING => "",
CURLOPT_MAXREDIRS => 10,
CURLOPT_TIMEOUT => 30,
CURLOPT_HTTP_VERSION => CURL_HTTP_VERSION_1_1,
CURLOPT_CUSTOMREQUEST => "POST",
CURLOPT_HTTPHEADER => [
"Authorization: Bearer <token>"
],
]);
$response = curl_exec($curl);
$err = curl_error($curl);
curl_close($curl);
if ($err) {
echo "cURL Error #:" . $err;
} else {
echo $response;
}package main
import (
"fmt"
"net/http"
"io"
)
func main() {
url := "https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof"
req, _ := http.NewRequest("POST", url, nil)
req.Header.Add("Authorization", "Bearer <token>")
res, _ := http.DefaultClient.Do(req)
defer res.Body.Close()
body, _ := io.ReadAll(res.Body)
fmt.Println(string(body))
}HttpResponse<String> response = Unirest.post("https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof")
.header("Authorization", "Bearer <token>")
.asString();require 'uri'
require 'net/http'
url = URI("https://quantura.studio/api/v1/ensemble-forecasts/{forecast_id}/proof")
http = Net::HTTP.new(url.host, url.port)
http.use_ssl = true
request = Net::HTTP::Post.new(url)
request["Authorization"] = 'Bearer <token>'
response = http.request(request)
puts response.read_body{
"data": {
"provider": "vbase",
"schema_version": "quantura_forecast_proof_v1",
"status": "stamped",
"content_cid": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"receipt": {
"object_cid": "0xaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa",
"set_cid": "0xbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbbb",
"transaction_hash": "0xcccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccccc",
"user_address": "0xdddddddddddddddddddddddddddddddddddddddd",
"chain_id": 8453,
"timestamp": "2026-10-09T14:20:00Z"
},
"error_code": null
},
"meta": {
"api_version": "v1"
}
}Authorizations
bearerAuthclerkOAuth
Bearer authentication header of the form Bearer <token>, where <token> is your auth token.