Pith Number

pith:JOBJ2FFD

pith:2026:JOBJ2FFDNTKXJEJ62AETX3OEOJ

not attested not anchored not stored refs pending

Known By Their Actions: Fingerprinting LLM Browser Agents via UI Traces

Chris Russell, Jabez Magomere, Joss Wright, Samuelle Marro, William Lugoloobi

arxiv:2605.14786 v1 · 2026-05-14 · cs.CR · cs.AI · cs.HC · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JOBJ2FFDNTKXJEJ62AETX3OEOJ}

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	2026-05-17T23:38:58.501376Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4b829d14a36cd574913ed0093bedc4727613d070616570f335ae11ff62de409e

Aliases

arxiv: 2605.14786 · arxiv_version: 2605.14786v1 · doi: 10.48550/arxiv.2605.14786 · pith_short_12: JOBJ2FFDNTKX · pith_short_16: JOBJ2FFDNTKXJEJ6 · pith_short_8: JOBJ2FFD

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/JOBJ2FFDNTKXJEJ62AETX3OEOJ \
  | 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: 4b829d14a36cd574913ed0093bedc4727613d070616570f335ae11ff62de409e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a011b194a6719110255938e2c11bdf9e670f333d0a8a025522b224ca52379a55",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.HC",
      "cs.LG"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-05-14T12:55:19Z",
    "title_canon_sha256": "b35c82bf01a3cd9a767549f4fb5cc0ea465a6392b19534513fe268c9850b81af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.14786",
    "kind": "arxiv",
    "version": 1
  }
}