Pith Number

pith:QOFNRFZY

pith:1992:QOFNRFZYBVXNMDA2SQBAF4Y4PM

not attested not anchored not stored refs pending

A Burst of Speculation

J. I. Katz

arxiv:astro-ph/9211001 v1 · 1992-11-03 · astro-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{QOFNRFZYBVXNMDA2SQBAF4Y4PM}

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	2026-05-18T01:40:26.791902Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

838ad897380d6ed60c1a940202f31c7b32e8d14714900be7e99c9bdbc5575092

Aliases

arxiv: astro-ph/9211001 · arxiv_version: astro-ph/9211001v1 · doi: 10.48550/arxiv.astro-ph/9211001 · pith_short_12: QOFNRFZYBVXN · pith_short_16: QOFNRFZYBVXNMDA2 · pith_short_8: QOFNRFZY

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/QOFNRFZYBVXNMDA2SQBAF4Y4PM \
  | 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: 838ad897380d6ed60c1a940202f31c7b32e8d14714900be7e99c9bdbc5575092

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8ed3ce4ee6380cf674393beb15d8d94159fb83ef268bfcb343e31842c8ddb3e2",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1992-11-03T20:37:21Z",
    "title_canon_sha256": "d9e6020d9ec8a8d957a09284b4c036989dc88ce43e33d8fbbaa544eaae8d6afe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9211001",
    "kind": "arxiv",
    "version": 1
  }
}