Pith Number

pith:2K2HTCAE

pith:2026:2K2HTCAEBCVTY4HUJWBSZAOOXK

not attested not anchored not stored refs pending

Handwriting Extraction and Analysis of Signature Lists in Swiss Popular Initiatives

Andreas Fischer, Marco Peer, Mathias Seuret, Thomas Gorges, Vincent Christlein

arxiv:2606.05018 v1 · 2026-06-03 · cs.CV

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2K2HTCAEBCVTY4HUJWBSZAOOXK}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-06-04T01:10:02.011076Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d2b479880408ab3c70f44d832c81cebaaffcff3852f18725cd7f919d1a597fe5

Aliases

arxiv: 2606.05018 · arxiv_version: 2606.05018v1 · doi: 10.48550/arxiv.2606.05018 · pith_short_12: 2K2HTCAEBCVT · pith_short_16: 2K2HTCAEBCVTY4HU · pith_short_8: 2K2HTCAE

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2K2HTCAEBCVTY4HUJWBSZAOOXK \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d2b479880408ab3c70f44d832c81cebaaffcff3852f18725cd7f919d1a597fe5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f7a04bce71c6c8aa69257499552754134cce47ae520f18af9866f832552f8cf8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-06-03T15:41:30Z",
    "title_canon_sha256": "8573f3e8c0c4872eb34e19c65109571301f97626447c0dfc7a0bd8eba9bb387d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.05018",
    "kind": "arxiv",
    "version": 1
  }
}