Pith Number

pith:QN4PVFS2

pith:2014:QN4PVFS2VGIIFVMOGOW35BZNWH

not attested not anchored not stored refs pending

Signatures of very massive stars: supercollapsars and their cosmological rate

Maxim V. Barkov, Umberto Maio

arxiv:1401.7326 v1 · 2014-01-28 · astro-ph.HE · 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{QN4PVFS2VGIIFVMOGOW35BZNWH}

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	2026-05-18T02:57:07.360041Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8378fa965aa99082d58e33adbe872db1e87866038f0f8dd09654a94913d0de82

Aliases

arxiv: 1401.7326 · arxiv_version: 1401.7326v1 · doi: 10.48550/arxiv.1401.7326 · pith_short_12: QN4PVFS2VGII · pith_short_16: QN4PVFS2VGIIFVMO · pith_short_8: QN4PVFS2

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/QN4PVFS2VGIIFVMOGOW35BZNWH \
  | 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: 8378fa965aa99082d58e33adbe872db1e87866038f0f8dd09654a94913d0de82

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4d62526067a8ea0246a6ddabd0c7e0f0c89fe5f66a79645053cf6afe1c6b46cd",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2014-01-28T21:00:24Z",
    "title_canon_sha256": "b761c1edb21deaae8f946cf4ff4e586678c75552111a56875639b1d4150f32d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1401.7326",
    "kind": "arxiv",
    "version": 1
  }
}