Pith Number

pith:HJNNLTZI

pith:2006:HJNNLTZIXZPD6NRTTPPHWLGB3B

not attested not anchored not stored refs pending

Collapse of Positronium and Vacuum Instability

A.E. Shabad (1), Israel), Moscow, Rehovot, Russia) ((2) Center for Astrophysics, V.V. Usov (2) ((1) P.N. Lebedev Physics Institute, Weizmann Institute of Science

arxiv:astro-ph/0601542 v1 · 2006-01-24 · astro-ph · hep-ph · hep-th · quant-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{HJNNLTZIXZPD6NRTTPPHWLGB3B}

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	2026-05-18T00:55:40.015491Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3a5ad5cf28be5e3f36339bde7b2cc1d8781cc97c9c34ab879a81c36cbaf97371

Aliases

arxiv: astro-ph/0601542 · arxiv_version: astro-ph/0601542v1 · doi: 10.48550/arxiv.astro-ph/0601542 · pith_short_12: HJNNLTZIXZPD · pith_short_16: HJNNLTZIXZPD6NRT · pith_short_8: HJNNLTZI

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/HJNNLTZIXZPD6NRTTPPHWLGB3B \
  | 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: 3a5ad5cf28be5e3f36339bde7b2cc1d8781cc97c9c34ab879a81c36cbaf97371

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee92b7878402a25992db6006a22823d24500cfe8656751d0f9e6a1c0fcd4261f",
    "cross_cats_sorted": [
      "hep-ph",
      "hep-th",
      "quant-ph"
    ],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-01-24T16:13:24Z",
    "title_canon_sha256": "70525ddb59b3599caf57dd00c62241c7aa8da3b14a05c00037f7a403bf92fdd7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0601542",
    "kind": "arxiv",
    "version": 1
  }
}