Pith Number

pith:NDQLTB2I

pith:2013:NDQLTB2IKUGAUYQAPZPDX2RO4E

not attested not anchored not stored refs pending

Finding the First Cosmic Explosions. III. Pulsational Pair-Instability Supernovae

Alexander Heger, Chris L. Fryer, Daniel J. Whalen, Joseph Smidt, Massimo Stiavelli, S. E. Woosley, Wesley Even

arxiv:1311.1221 v3 · 2013-11-05 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NDQLTB2IKUGAUYQAPZPDX2RO4E}

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	2026-05-18T01:46:38.572743Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

68e0b98748550c0a62007e5e3bea2ee10fefdf358e4e02258352a8557d87d0e1

Aliases

arxiv: 1311.1221 · arxiv_version: 1311.1221v3 · doi: 10.48550/arxiv.1311.1221 · pith_short_12: NDQLTB2IKUGA · pith_short_16: NDQLTB2IKUGAUYQA · pith_short_8: NDQLTB2I

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/NDQLTB2IKUGAUYQAPZPDX2RO4E \
  | 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: 68e0b98748550c0a62007e5e3bea2ee10fefdf358e4e02258352a8557d87d0e1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "418ea2c008a96060b4cecba4a045b53da9a2c12667b02f429a625b91c6ff090c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-11-05T21:11:38Z",
    "title_canon_sha256": "fb8eaf5950165818b0955a3cea8330575da96df2f9293779e00062ffe99dfb3f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1311.1221",
    "kind": "arxiv",
    "version": 3
  }
}