Compute statement ID
Computes the @id an integrity statement should carry: the statement without its @id is converted to N-Quads, canonicalized with RDFC-1.0, and hashed to a BLAKE3 CID, returned as a urn:cid: URN. A context the service does not bundle cannot be resolved, so a statement that names one is refused with 400. Any signed-in caller may use it.
post
https://<host>/utils/v1/integrity/statement/compute-idbash
curl --request POST \
--url 'https://<host>/utils/v1/integrity/statement/compute-id' \
--header 'Authorization: Bearer <token>' \
--header 'Content-Type: application/json' \
--data 'null'javascript
const response = await fetch("https://<host>/utils/v1/integrity/statement/compute-id", {
method: "POST",
headers: {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
},
body: JSON.stringify(null)
});
const data = await response.json();typescript
interface IntegrityStatementComputeIdResponse {
id: string;
}
const response = await fetch("https://<host>/utils/v1/integrity/statement/compute-id", {
method: "POST",
headers: {
"Authorization": "Bearer <token>",
"Content-Type": "application/json"
},
body: JSON.stringify(null)
});
if (!response.ok) throw new Error(`${response.status} ${response.statusText}`);
const data: IntegrityStatementComputeIdResponse = await response.json();python
import requests
response = requests.post(
"https://<host>/utils/v1/integrity/statement/compute-id",
headers={
"Authorization": "Bearer <token>",
"Content-Type": "application/json",
},
json=None,
)
response.raise_for_status()
print(response.json())go
package main
import (
"fmt"
"io"
"net/http"
"strings"
)
func main() {
body := strings.NewReader(`null`)
req, err := http.NewRequest(http.MethodPost, "https://<host>/utils/v1/integrity/statement/compute-id", body)
if err != nil {
panic(err)
}
req.Header.Set("Authorization", "Bearer <token>")
req.Header.Set("Content-Type", "application/json")
res, err := http.DefaultClient.Do(req)
if err != nil {
panic(err)
}
defer res.Body.Close()
data, err := io.ReadAll(res.Body)
if err != nil {
panic(err)
}
fmt.Println(res.Status, string(data))
}java
import java.net.URI;
import java.net.http.HttpClient;
import java.net.http.HttpRequest;
import java.net.http.HttpResponse;
public class Example {
public static void main(String[] args) throws Exception {
HttpRequest request = HttpRequest.newBuilder()
.uri(URI.create("https://<host>/utils/v1/integrity/statement/compute-id"))
.header("Authorization", "Bearer <token>")
.header("Content-Type", "application/json")
.method("POST", HttpRequest.BodyPublishers.ofString("""
null
"""))
.build();
HttpResponse<String> response = HttpClient.newHttpClient()
.send(request, HttpResponse.BodyHandlers.ofString());
System.out.println(response.statusCode() + " " + response.body());
}
}csharp
using System.Net.Http.Headers;
using System.Text;
using var client = new HttpClient();
using var request = new HttpRequestMessage(HttpMethod.Post, "https://<host>/utils/v1/integrity/statement/compute-id");
request.Headers.Authorization = new AuthenticationHeaderValue("Bearer", "<token>");
request.Content = new StringContent("""
null
""", Encoding.UTF8, "application/json");
using var response = await client.SendAsync(request);
Console.WriteLine($"{(int)response.StatusCode} {await response.Content.ReadAsStringAsync()}");php
<?php
$ch = curl_init('https://<host>/utils/v1/integrity/statement/compute-id');
curl_setopt_array($ch, [
CURLOPT_CUSTOMREQUEST => 'POST',
CURLOPT_HTTPHEADER => [
'Authorization: Bearer <token>',
'Content-Type: application/json',
],
CURLOPT_POSTFIELDS => <<<'JSON'
null
JSON,
CURLOPT_RETURNTRANSFER => true,
]);
$response = curl_exec($ch);
$status = curl_getinfo($ch, CURLINFO_RESPONSE_CODE);
echo $status . " " . $response . PHP_EOL;ruby
require "net/http"
uri = URI("https://<host>/utils/v1/integrity/statement/compute-id")
request = Net::HTTP::Post.new(uri)
request["Authorization"] = "Bearer <token>"
request["Content-Type"] = "application/json"
request.body = <<~'JSON'
null
JSON
response = Net::HTTP.start(uri.hostname, uri.port, use_ssl: uri.scheme == "https") do |http|
http.request(request)
end
puts "#{response.code} #{response.body}"rust
// Cargo.toml dependencies: reqwest (features "json"), serde_json, tokio (features "full")
use serde_json::json;
#[tokio::main]
async fn main() -> Result<(), Box<dyn std::error::Error>> {
let response = reqwest::Client::new()
.post("https://<host>/utils/v1/integrity/statement/compute-id")
.header("Authorization", "Bearer <token>")
.json(&json!(null))
.send()
.await?;
println!("{} {}", response.status(), response.text().await?);
Ok(())
}Authorizations
BearerAuth· HTTP bearer (JWT)
Request bodyrequired
application/json
any
Responses
200The statement's urn:cid: ID
application/json
idstringrequired
Examplejson
{
"id": "string"
}400The statement is not a JSON object or fails JSON-LD expansion
application/json
callstackobjectShow properties
object | nullerrorstringrequired
Examplejson
{
"callstack": {},
"error": "string"
}401Missing or invalid bearer token
application/json
callstackobjectShow properties
object | nullerrorstringrequired
Examplejson
{
"callstack": {},
"error": "string"
}500Internal error
application/json
callstackobjectShow properties
object | nullerrorstringrequired
Examplejson
{
"callstack": {},
"error": "string"
}503Auth Service unavailable
application/json
callstackobjectShow properties
object | nullerrorstringrequired
Examplejson
{
"callstack": {},
"error": "string"
}