Pith Number

pith:PDUUUTEW

pith:2003:PDUUUTEWPOQ6UGA3DGOZCBPZTM

not attested not anchored not stored refs pending

Fundamental units: physics and metrology

L. B. Okun

arxiv:physics/0310069 v1 · 2003-10-15 · physics.ed-ph · physics.gen-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{PDUUUTEWPOQ6UGA3DGOZCBPZTM}

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	2026-05-18T00:37:24.242355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

78e94a4c967ba1ea181b199d9105f99b049fc62ef6c00980ded4a07c27de3d00

Aliases

arxiv: physics/0310069 · arxiv_version: physics/0310069v1 · doi: 10.48550/arxiv.physics/0310069 · pith_short_12: PDUUUTEWPOQ6 · pith_short_16: PDUUUTEWPOQ6UGA3 · pith_short_8: PDUUUTEW

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/PDUUUTEWPOQ6UGA3DGOZCBPZTM \
  | 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: 78e94a4c967ba1ea181b199d9105f99b049fc62ef6c00980ded4a07c27de3d00

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "72573ed268163fb61b41044c331e119dbe2e35185bdaa8ca38f3d9a38511bd58",
    "cross_cats_sorted": [
      "physics.gen-ph"
    ],
    "license": "",
    "primary_cat": "physics.ed-ph",
    "submitted_at": "2003-10-15T15:07:14Z",
    "title_canon_sha256": "35eb7f12119af7aa93422cf9d623fbdb6610dfb5f02f93044d2c1db08c423ba7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/0310069",
    "kind": "arxiv",
    "version": 1
  }
}