Pith Number

pith:3Q25BIL3

pith:2026:3Q25BIL3TMYGDEOUZ2S3AJBZIT

not attested not anchored not stored refs pending

A Watermark for Vision-Language-Action and World Action Models

Jiaheng Wei, Shuai Liu, Xinlei He, Yule Liu

arxiv:2606.23574 v1 · 2026-06-22 · cs.CR · cs.RO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{3Q25BIL3TMYGDEOUZ2S3AJBZIT}

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	2026-06-23T03:14:31.286658Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

dc35d0a17b9b306191d4cea5b0243944cf1a004e6f303fee8b99b15174a9fb37

Aliases

arxiv: 2606.23574 · arxiv_version: 2606.23574v1 · doi: 10.48550/arxiv.2606.23574 · pith_short_12: 3Q25BIL3TMYG · pith_short_16: 3Q25BIL3TMYGDEOU · pith_short_8: 3Q25BIL3

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/3Q25BIL3TMYGDEOUZ2S3AJBZIT \
  | 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: dc35d0a17b9b306191d4cea5b0243944cf1a004e6f303fee8b99b15174a9fb37

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "30bad18ac39f2014e5bbc1e3812ff72a268e11f425f83f7a027e93f5dd1fb493",
    "cross_cats_sorted": [
      "cs.RO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-06-22T16:39:28Z",
    "title_canon_sha256": "4d109a444d50e0f4df9744fca61ae0f2a3e01aa8d7ca368dd7dbbd35b3434caa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.23574",
    "kind": "arxiv",
    "version": 1
  }
}