CrawlCheck

Timestamp proof

Every report is fingerprinted, and each day is anchored to Bitcoin

A report is a claim about what a server did at a moment in time. Until it is anchored, the only evidence that it said so — and that nobody edited it afterwards — is our own database, which we control.

The citation state is inside this digest too. The names, the phone numbers, the address, and every profile the site claims — with what each one answered when it was checked — are part of the fingerprint. It does not mean a directory indexed anything: no timestamp can do that. It means the state of those listings on that date can be proved rather than remembered.

What this proves: that a report existed in exactly this form at that time, and has not been altered since. What it does not prove: that the measurement was correct. Those are two different claims and only the first can be settled by mathematics.

How it works

  1. Each report is reduced to its measurements — host, timestamp, section scores, every path and status fetched, every crawler identity and what it received — canonicalised with sorted keys and hashed with SHA-256. Wording, layout and section copy are excluded, so an editorial change never invalidates an existing proof.
  2. The day’s digests are sorted and folded into a Merkle tree: parent = SHA256(left || right), an odd node paired with itself. Sorting means the order scans arrived cannot change the root.
  3. The root is submitted to the OpenTimestamps calendars, which aggregate it into a Bitcoin transaction. No wallet, no fee, no key held by us — the proof is a file, not a coin.
  4. Anyone verifies it with the reference client and no permission from us: ots verify -d <root> crawlcheck-2026-09-03.ots

2026-09-03

Merkle root9fe4272df0d17b27cc7af0505426ef49cebe1593a1afc6edf687f29091cb0d87
Reports covered94
Sealed2026-09-04T01:17:01.632Z
Bitcoin anchorsubmitted to https://a.pool.opentimestamps.org — download the .ots proof

Every sealed day

39 days anchored. Each links to its own root and proof file.

A fresh submission reports pending confirmation until the calendar’s next Bitcoin transaction confirms, usually within a few hours. Run ots upgrade on the file after that and it carries a block header attestation permanently.

The 94 digests sealed under this root
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5819326575574924502f5e1cb11a37a3d1aac6f8b22fdfa4c0adcb4b9ade40b3
59679ff7d5e243ee96f6b0a0b17cca3fe915a47249dc46ca9fd98d0e8c6546c6
5aa4551e95a118e696e6de9492b0fa2f256d46b3e24f03038a197ff437257582
5e98565bd65ec6bf4ab27fd14a60774bb7b2631280b97f49b9eee76ab8a5b202
5f6557f68f3998c02231398c6e483c24de6ec9dfd527a50591d127dc879037fc
60767bfff20fd30b8e961cf7f622da439c6ac72f0af130d3bb1127d7d49700d4
650c7d5dc1782ac3973828a6a0995ca9651dce5110ced131c402cb0dfac7db35
65e990625ccdea7c6a494dd34ad019027ab206ff112ac48c6e5cc3089042eed7
6631b27d7e12b4afb32d9c2f527b1ae497eff2b1841630bc72fe77f6f177d716
66a02278417240c48064fad8a3a12410de962d6815d45c81d0a8e99598262b8b
6941e4cec562de0c3f60e16030e81d1e4dbdc23d26ba2b90c08897d24e715989
6a608f4e18266ca4a55ee46b2e0011ad3c5e9936c689c94b08adb3c7a18fc2ac
6ca385925909f2eb68c2c187145ddc617c12eb42db5937d734ed3486752b7f52
6e31013c13832ffd2b50386b75a8e90279099107be8bdb1c29e4dfabed355e19
6ed5388f8c5991f5480c8d58a8bb766793e9e4bcaa808f3565c01b1c7f1883dc
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