Pith Number

pith:POUTR42Y

pith:2026:POUTR42Y3PRPKTKX5HMZIS6HIQ

not attested not anchored not stored refs pending

PhyCheck: Fine-Grained Evidence-Grounded Dataset for Physical Law Understanding in Video-LLMs

Jinyang Zou, Peng Cheng, Shengwang Xu, Ting Yu, Zhan Qin, Zhibo Wang, Zhongjie Ba

arxiv:2608.02150 v1 · 2026-08-03 · cs.CV · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{POUTR42Y3PRPKTKX5HMZIS6HIQ}

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	2026-08-04T02:11:07.045987Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ba938f358dbe2f54d57e9d9944bc74416ab79bdb668854a9b394c15b2127910

Aliases

arxiv: 2608.02150 · arxiv_version: 2608.02150v1 · doi: 10.48550/arxiv.2608.02150 · pith_short_12: POUTR42Y3PRP · pith_short_16: POUTR42Y3PRPKTKX · pith_short_8: POUTR42Y

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/POUTR42Y3PRPKTKX5HMZIS6HIQ \
  | 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: 7ba938f358dbe2f54d57e9d9944bc74416ab79bdb668854a9b394c15b2127910

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cef7cea011eb07393d8969ef6b78aed22a8f595048cdc18b0673f5f22dabec2c",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2026-08-03T12:34:31Z",
    "title_canon_sha256": "38b3e6a17833fbb45da1a982b24523f10c3ffc18c406dba1271c43d98c2294f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.02150",
    "kind": "arxiv",
    "version": 1
  }
}