Pith Number

pith:WC22UDYT

pith:1998:WC22UDYTAYWHRCLIQGPVD73F5K

not attested not anchored not stored refs pending

Locality, QED and Classical Electrodynamics

Dirk Kreimer

arxiv:physics/9810008 v1 · 1998-10-05 · physics.class-ph · hep-th

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WC22UDYTAYWHRCLIQGPVD73F5K}

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	2026-05-18T01:16:37.823449Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0b5aa0f13062c788968819f51ff65ea91a607b879fa069c295b0c4fc64e007a

Aliases

arxiv: physics/9810008 · arxiv_version: physics/9810008v1 · doi: 10.48550/arxiv.physics/9810008 · pith_short_12: WC22UDYTAYWH · pith_short_16: WC22UDYTAYWHRCLI · pith_short_8: WC22UDYT

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/WC22UDYTAYWHRCLIQGPVD73F5K \
  | 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: b0b5aa0f13062c788968819f51ff65ea91a607b879fa069c295b0c4fc64e007a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c7cbd043d16986ac644b057ff4968fb9c0e5201f62c026bdd7e3d612dc0455ab",
    "cross_cats_sorted": [
      "hep-th"
    ],
    "license": "",
    "primary_cat": "physics.class-ph",
    "submitted_at": "1998-10-05T09:18:17Z",
    "title_canon_sha256": "3b6334b2d5e502cf4ef35a22b9ca9bf4f2bb625ff3aee1307dca51ea0ba4a69d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "physics/9810008",
    "kind": "arxiv",
    "version": 1
  }
}