Pith Number

pith:L3UROQXX

pith:2019:L3UROQXXC7RUVW3RJVI3MERYPB

not attested not anchored not stored refs pending

Ab initio QED treatment of the two-photon annihilation of positrons with bound electrons

A. V. Volotka, D. Yu, H. Hu, S. Fritzsche, V. A. Zaytsev, V. M. Shabaev, X. Ma

arxiv:1903.02243 v1 · 2019-03-06 · physics.atom-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{L3UROQXXC7RUVW3RJVI3MERYPB}

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	2026-07-05T00:02:09.025412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5ee91742f717e34adb714d51b61238785b095488fdd86f2f2f666439b508d444

Aliases

arxiv: 1903.02243 · arxiv_version: 1903.02243v1 · doi: 10.48550/arxiv.1903.02243 · pith_short_12: L3UROQXXC7RU · pith_short_16: L3UROQXXC7RUVW3R · pith_short_8: L3UROQXX

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/L3UROQXXC7RUVW3RJVI3MERYPB \
  | 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: 5ee91742f717e34adb714d51b61238785b095488fdd86f2f2f666439b508d444

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be30579f392bfb444046cad95cc04cd1860a0e454e69ff3930b896709a2eadda",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.atom-ph",
    "submitted_at": "2019-03-06T08:41:47Z",
    "title_canon_sha256": "b064ef9cc0861953329a3b6fca715b142530643c009b67fcc60d8b6bacb27052"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.02243",
    "kind": "arxiv",
    "version": 1
  }
}