Proof of the legal texts

For each legal text on this website, the text from the heading to the version line is recorded, without navigation, header and footer, and its SHA-256 checksum anchored in the Bitcoin blockchain via OpenTimestamps. Listed per version are the checksum, the block, the Merkle root, the proof files and the independent archive copy.

Scope

The text existed in this version no later than the time of the block and has been unchanged since.

On the Merkle root

Every Bitcoin block carries a single value in its header in which its entire content is condensed: the Merkle root. It is computed in stages from pairs of all transactions in the block; a single differing transaction yields a different root. What is timestamped is the manifest of this version, which contains the checksum of the text; OpenTimestamps bundles it with further submissions, and the root of that bundle enters the block within one transaction. The proof file supplies the link: it contains the complete chain of computation from the manifest to the Merkle root of the block named above. That root is retrieved from the raw data of public block explorers, not from their web interface.

Chain of proof 1 Legal text page.txt SHA-256 2 Checksum 64 hex digits component of 3 Manifest manifest.json: URL, time, checksum SHA-256, timestamped 4 Proof file manifest.json.ots: chain of computation yields 5 Merkle root in the block header, public
Current version Anchored in block 964411
Date stated in the document
August 17, 2026
Checksum of the text
9aaa690a4b93dae344a7e2a5bec84a857831a45d7a906f3e4086dcad5fd6cd35
Recorded on
August 28, 2026, 09:45 UTC
Bitcoin anchor
Anchored in block 964411
Merkle root of the block
4c5476b13742d9ae89a025f0e5f9083899d7eb9071ef48b9e37e86030daa34f7 Show the root in the block header

Proof files

Independent verification

  1. Load the proof files of the version: page.txt, manifest.json, manifest.json.ots. Alternatively the archive copy in raw form …id_/.
  2. shasum -a 256 page.txt yields the checksum shown above; the same value appears in the manifest under sha256_text.
  3. ots verify -f manifest.json manifest.json.ots from the opentimestamps-client package confirms block and time. Without a Bitcoin node of your own, the verifier at opentimestamps.org does this.
  4. Compare the Merkle root shown above against the block header. Raw data: blockchain.info/block-height/<no>?format=json.

As of August 28, 2026, 10:26 UTC

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