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-2026-09-05.ots

2026-09-05

Merkle root12793e8b01ed407fc45b38bce1f4d3350347fc554364f5d3178a5af65acfc231
Reports covered127
Sealed2026-09-06T01:17:01.907Z
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 127 digests sealed under this root
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486ec39de0c60f7421dc09b2f48a3261ab6b94d8bcf7a8fe61bfdb443c8604b5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6c0debc548fa756a06eadecf74e8b2124e7d48108506c39bef2ad4cb11c82efb
7138b5671024b4152e29e357504c1b1c990b3d4522b04b4709e3b23d60e977a2
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7a51c994962844c066f68adcf36b83986aceeb857660744b07df08d10c011f8c
7b03cbacb2eddcf0acb8900323e5901bd39deb8a724b2c37166f2fdb68359ac9
7ba455ae9da8aed625251376c87b00ad6cd1cf705905b0efaa02fea96c938657
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872d13415d4cabab34c3b10ec1a1eb7f88a77f918d6cfe8216d97623e2d2dbeb
87d30b32579bb9c43dc0c3b6cbfbe7aef4a814e223fcdbff878677cc6cbab43f
8910df221e4d4e71140166669c09495348d30ca400df45028f6e56f6c0ac8794
8a0c9da3a18e311b09f8bf89611cf43a0d7e5ed091bc771ee7996798eba2c720
8a595efdb40c672a0b81c3396a039f3dc5a7311376e4d931d05c70cfab5cb4f6
8b07b25c1a7c0baff9cba20b6ea27ef7673f4d3866092592b10f27b07db05c6c
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