Pith Number

pith:LKC4PU66

pith:2021:LKC4PU665EKH3M4LUA7WUMJ4YL

not attested not anchored not stored refs pending

Introducing $\texttt{NatPy}$, a simple and convenient Python module for dealing with natural units

Andre Scaffidi, Tomas L. Howson

arxiv:2108.07173 v1 · 2021-07-28 · physics.gen-ph · hep-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{LKC4PU665EKH3M4LUA7WUMJ4YL}

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	2026-07-05T03:06:02.062901Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a85c7d3dee9147db38ba03f6a313cc2f32ffa18153c0b380fd8d6db15e3563f

Aliases

arxiv: 2108.07173 · arxiv_version: 2108.07173v1 · doi: 10.48550/arxiv.2108.07173 · pith_short_12: LKC4PU665EKH · pith_short_16: LKC4PU665EKH3M4L · pith_short_8: LKC4PU66

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/LKC4PU665EKH3M4LUA7WUMJ4YL \
  | 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: 5a85c7d3dee9147db38ba03f6a313cc2f32ffa18153c0b380fd8d6db15e3563f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7914ba41583e2664b530b63e0ac855e2a88d410332fcb7d7712e91815063c9e3",
    "cross_cats_sorted": [
      "hep-ph"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "physics.gen-ph",
    "submitted_at": "2021-07-28T06:15:23Z",
    "title_canon_sha256": "c06302ed97546ebd6cd0d0b01a6dee853dad466c14435ec021e6339532baf573"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.07173",
    "kind": "arxiv",
    "version": 1
  }
}