Pith Number

pith:FZ4KTRGO

pith:2013:FZ4KTRGOZSYNCP6AGIO4NOGO4C

not attested not anchored not stored refs pending

The nebular spectra of SN 2012aw and constraints on stellar nucleosynthesis from oxygen emission lines

A. Jerkstrand, C. Fransson, F. Taddia, J. Sollerman, M. Fraser, R. Kotak, S. J. Smartt

arxiv:1311.2031 v2 · 2013-11-08 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FZ4KTRGOZSYNCP6AGIO4NOGO4C}

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	2026-05-18T01:46:32.821540Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e78a9c4ceccb0d13fc0321dc6b8cee0bd728cb87db4f57db5dd784c71cbc056

Aliases

arxiv: 1311.2031 · arxiv_version: 1311.2031v2 · doi: 10.48550/arxiv.1311.2031 · pith_short_12: FZ4KTRGOZSYN · pith_short_16: FZ4KTRGOZSYNCP6A · pith_short_8: FZ4KTRGO

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/FZ4KTRGOZSYNCP6AGIO4NOGO4C \
  | 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: 2e78a9c4ceccb0d13fc0321dc6b8cee0bd728cb87db4f57db5dd784c71cbc056

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "087b4c854b846d540e08a96c94951bad33b589243793ba164e29573dbbafb961",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-11-08T17:49:48Z",
    "title_canon_sha256": "0c383d783c892535137e9b1c5506d753b130078d4c581a2907102b67408a5ae1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.2031",
    "kind": "arxiv",
    "version": 2
  }
}