Pith Number

pith:3E7Z3XBM

pith:2007:3E7Z3XBM6JBF7M2W5OEC6OYMGQ

not attested not anchored not stored refs pending

Molecular and Atomic Excitation Stratification in the Outflow of the Planetary Nebula M27

B.-G. Andersson, Eric B. Burgh, Jeffrey Kruk, Kenneth Sembach, Kevin France, Paul D. Feldman, Roxana E. Lupu, Stephan R. McCandliss

arxiv:astro-ph/0701439 v1 · 2007-01-15 · 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{3E7Z3XBM6JBF7M2W5OEC6OYMGQ}

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	2026-05-18T04:29:07.237296Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d93f9ddc2cf2425fb356eb882f3b0c341afeaaca7e668721c64b1e1b92a41349

Aliases

arxiv: astro-ph/0701439 · arxiv_version: astro-ph/0701439v1 · doi: 10.48550/arxiv.astro-ph/0701439 · pith_short_12: 3E7Z3XBM6JBF · pith_short_16: 3E7Z3XBM6JBF7M2W · pith_short_8: 3E7Z3XBM

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/3E7Z3XBM6JBF7M2W5OEC6OYMGQ \
  | 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: d93f9ddc2cf2425fb356eb882f3b0c341afeaaca7e668721c64b1e1b92a41349

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "05acb97e603083df2b0b47102684a14a62df1f6d47744abf5586db2748713758",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-01-15T23:07:17Z",
    "title_canon_sha256": "96acd78618a12fd65ba16c0e54d60c12a3aa775c44be9ace34d61656f75fb7a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0701439",
    "kind": "arxiv",
    "version": 1
  }
}