The OpenTimestamps proof of one day

GET /v1/ledger-days/{day}/proof.ots

https://verify.tanba-ooh.kz/v1/ledger-days/{day}/proof.ots

The .ots file for the day's digest. It is a pending proof (calendar promises) until status of the day is anchored, then it carries the Bitcoin attestation. Verify with the official client, ots verify -d DIGEST FILE.ots, where DIGEST is the digest of the day. 404 until the digest has been submitted.

Authentication

None. This call is public.

Parameters

Name	In	Type	Required	Description	Example
`day`	path	string	yes	The Asia/Almaty day, `YYYY-MM-DD`.	`2026-10-05`

Responses

200 The proof.

`application/vnd.opentimestamps.v1`

Errors

Errors are problem documents (application/problem+json) with a stable code.

Status	Meaning
404	Nothing there, or not visible to the caller.
429	Rate limit; see `Retry-After`.

Code samples

curl

curl 'https://verify.tanba-ooh.kz/v1/ledger-days/2026-10-05/proof.ots'

Python

import requests

response = requests.get(
    "https://verify.tanba-ooh.kz/v1/ledger-days/2026-10-05/proof.ots",
)
print(response.status_code, response.text)

package main

import (
	"fmt"
	"io"
	"net/http"
)

func main() {
	req, err := http.NewRequest("GET", "https://verify.tanba-ooh.kz/v1/ledger-days/2026-10-05/proof.ots", nil)
	if err != nil {
		panic(err)
	}
	resp, err := http.DefaultClient.Do(req)
	if err != nil {
		panic(err)
	}
	defer resp.Body.Close()
	data, _ := io.ReadAll(resp.Body)
	fmt.Println(resp.Status, string(data))
}