Pith Number

pith:APC6Q6GA

pith:2013:APC6Q6GAAMCVS2VDEFV6ONJHLP

not attested not anchored not stored refs pending

Progenitors of supernova Ibc: a single Wolf-Rayet star as the possible progenitor of the SN Ib iPTF13bvn

Cyril Georgy (Keele University, Jose H. Groh (Geneva Observatory, Switzerland), Sylvia Ekstrom (Geneva Observatory, UK)

arxiv:1307.8434 v2 · 2013-07-31 · astro-ph.SR · astro-ph.CO · astro-ph.GA · 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{APC6Q6GAAMCVS2VDEFV6ONJHLP}

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	2026-05-18T03:10:47.459412Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

03c5e878c00305596aa3216be735275bee2c20be256d53573379ca145f266eff

Aliases

arxiv: 1307.8434 · arxiv_version: 1307.8434v2 · doi: 10.48550/arxiv.1307.8434 · pith_short_12: APC6Q6GAAMCV · pith_short_16: APC6Q6GAAMCVS2VD · pith_short_8: APC6Q6GA

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/APC6Q6GAAMCVS2VDEFV6ONJHLP \
  | 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: 03c5e878c00305596aa3216be735275bee2c20be256d53573379ca145f266eff

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5e252628fb812101e97f65bdd63c73c4c84612745bab9bab53f0e02903ae8018",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2013-07-31T19:25:13Z",
    "title_canon_sha256": "271cfe543e7260fe218f885198628a64b00ee8ef94b3fe240d338255609b4ea7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1307.8434",
    "kind": "arxiv",
    "version": 2
  }
}