Pith Number

pith:EFBRQZGD

pith:2012:EFBRQZGDV45WHEHDNVKHDZB3W2

not attested not anchored not stored refs pending

Radiation Transfer in the Cavity and Shell of Planetary Nebulae

(2) UCL), A. A. Zijlstra (1) ((1) Jodrell Bank Centre for Astrophysics, M. D. Gray (1), M. Matsuura (2), University of Manchester

arxiv:1201.3930 v1 · 2012-01-18 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EFBRQZGDV45WHEHDNVKHDZB3W2}

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	2026-05-18T01:58:47.087607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

21431864c3af3b6390e36d5471e43bb6a1855e29c638fe1d27ee1f53038d2622

Aliases

arxiv: 1201.3930 · arxiv_version: 1201.3930v1 · doi: 10.48550/arxiv.1201.3930 · pith_short_12: EFBRQZGDV45W · pith_short_16: EFBRQZGDV45WHEHD · pith_short_8: EFBRQZGD

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/EFBRQZGDV45WHEHDNVKHDZB3W2 \
  | 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: 21431864c3af3b6390e36d5471e43bb6a1855e29c638fe1d27ee1f53038d2622

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "105149c1de801e9663eb9079767c7d11528d952592b860071e9fb3072842c1df",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2012-01-18T21:08:18Z",
    "title_canon_sha256": "ac1d48ea1c2e92fc0d403b3312cbbc6d38510e80179564b5f01c9106214290dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.3930",
    "kind": "arxiv",
    "version": 1
  }
}