Pith Number

pith:4EOJKXIZ

pith:2012:4EOJKXIZK7CW2U7DV6HJYDJGV6

not attested not anchored not stored refs pending

M31N 2008-05d: A M 31 disk nova with a dipping supersoft X-ray light curve

F. Haberl, G. Sala, H. Stiele, M. Della Valle, M. Henze, M. Hernanz, W. Pietsch

arxiv:1207.2339 v1 · 2012-07-10 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4EOJKXIZK7CW2U7DV6HJYDJGV6}

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	2026-05-18T01:56:25.882858Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e11c955d1957c56d53e3af8e9c0d26afa060b2d7929be33d85a154280bef37f8

Aliases

arxiv: 1207.2339 · arxiv_version: 1207.2339v1 · doi: 10.48550/arxiv.1207.2339 · pith_short_12: 4EOJKXIZK7CW · pith_short_16: 4EOJKXIZK7CW2U7D · pith_short_8: 4EOJKXIZ

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/4EOJKXIZK7CW2U7DV6HJYDJGV6 \
  | 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: e11c955d1957c56d53e3af8e9c0d26afa060b2d7929be33d85a154280bef37f8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "139209040c30bd807fa8fb06b4d905d4ae75d28fff9a1aff85baae0ca5b30f00",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-07-10T13:28:23Z",
    "title_canon_sha256": "868d2391338ea56ade97641144672fde3fce411f9300c425640c45a08ab29ac6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1207.2339",
    "kind": "arxiv",
    "version": 1
  }
}