Check a record yourself.

Every entry of every word is numbered in the house log, in the order the house wrote it. Once a day the house signs a checkpoint of the log and sends its fingerprint to OpenTimestamps, outside the house. Anyone who keeps a checkpoint can replay the log against it, and a deleted word or a history signed again no longer matches.

Replay the whole log here

Published at /log/checkpoints.json and /log.json. Each checkpoint's OpenTimestamps proof is beside it, for the standard ots verify.

The house key's fingerprint: fetched when you verify. It is published at /.well-known/symi-key.json.

import { verifyRecord, fetchLog, replayLog } from 'https://www.symi.io/verify.mjs';
const record = await (await fetch('https://www.symi.io/api/cells/<id>/verify')).json();
const { key } = await (await fetch('https://www.symi.io/.well-known/symi-key.json')).json();
const result = await verifyRecord(record, key); // { ok, count, entries }
const log = await fetchLog('https://www.symi.io');
const whole = await replayLog(log.entries, log.checkpoints, log.key); // { ok, length, checkpoints, problems }