Pith Number

pith:QPQYNWHU

pith:2010:QPQYNWHUELIZFJFQ5U7G7RSVML

not attested not anchored not stored refs pending

Observed Fractions of Core-Collapse Supernova Types and Initial Masses of their Single and Binary Progenitor Stars

Alexei V. Filippenko, Nathan Smith, Ryan Chornock, Weidong Li

arxiv:1006.3899 v1 · 2010-06-19 · astro-ph.HE · astro-ph.CO · 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{QPQYNWHUELIZFJFQ5U7G7RSVML}

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	2026-05-18T02:06:44.301578Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83e186d8f422d192a4b0ed3e6fc65562cf342b3d92aa4c8c2b2d4500262857a2

Aliases

arxiv: 1006.3899 · arxiv_version: 1006.3899v1 · doi: 10.48550/arxiv.1006.3899 · pith_short_12: QPQYNWHUELIZ · pith_short_16: QPQYNWHUELIZFJFQ · pith_short_8: QPQYNWHU

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/QPQYNWHUELIZFJFQ5U7G7RSVML \
  | 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: 83e186d8f422d192a4b0ed3e6fc65562cf342b3d92aa4c8c2b2d4500262857a2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "534f9c89cd6749236b936d1ce6fcf80fc4bb3201699bedcd6cbaccdf08f2cba3",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2010-06-19T22:23:41Z",
    "title_canon_sha256": "d7d225be68afc0b6261f331ca6cedb598507341858db7943447a6ed0ca344190"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1006.3899",
    "kind": "arxiv",
    "version": 1
  }
}