Pith Number

pith:VK7E532C

pith:2026:VK7E532CJPX2ENL57EGVBTIY7W

not attested not anchored not stored refs pending

Work Done by Sliding Friction

J. David Brown

arxiv:2608.11157 v1 · 2026-08-11 · physics.ed-ph · physics.class-ph · physics.comp-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{VK7E532CJPX2ENL57EGVBTIY7W}

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	2026-08-12T01:24:43.223291Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aabe4eef424befa2357df90d50cd18fd90939a70763221f6e66ebde63b6aca5f

Aliases

arxiv: 2608.11157 · arxiv_version: 2608.11157v1 · doi: 10.48550/arxiv.2608.11157 · pith_short_12: VK7E532CJPX2 · pith_short_16: VK7E532CJPX2ENL5 · pith_short_8: VK7E532C

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/VK7E532CJPX2ENL57EGVBTIY7W \
  | 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: aabe4eef424befa2357df90d50cd18fd90939a70763221f6e66ebde63b6aca5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9da975a7d928cbae0ea0c6f466aab5431f0f7c04148b9a8327e4ff922085bb95",
    "cross_cats_sorted": [
      "physics.class-ph",
      "physics.comp-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2026-08-11T17:15:28Z",
    "title_canon_sha256": "746559f928434832306cb999f7a6f77f923e1318afe8c3e74c95a1d48dab797c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.11157",
    "kind": "arxiv",
    "version": 1
  }
}