Pith Number

pith:XXTYOYWF

pith:2019:XXTYOYWF7NN7QRAWXGQOHHA22B

not attested not anchored not stored refs pending

Evolutionary models for R Coronae Borealis stars

Josiah Schwab

arxiv:1909.02569 v3 · 2019-09-05 · astro-ph.SR · 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{XXTYOYWF7NN7QRAWXGQOHHA22B}

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	2026-07-05T00:18:40.432189Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bde78762c5fb5bf84416b9a0e39c1ad0575bc002dce56ea3ca600803355db2b1

Aliases

arxiv: 1909.02569 · arxiv_version: 1909.02569v3 · doi: 10.48550/arxiv.1909.02569 · pith_short_12: XXTYOYWF7NN7 · pith_short_16: XXTYOYWF7NN7QRAW · pith_short_8: XXTYOYWF

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/XXTYOYWF7NN7QRAWXGQOHHA22B \
  | 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: bde78762c5fb5bf84416b9a0e39c1ad0575bc002dce56ea3ca600803355db2b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34bae851c883cfce359a2a43a039493f841415ac04287ae2284f13df7132ebea",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2019-09-05T18:00:01Z",
    "title_canon_sha256": "4dbb3e8b070805c6a94be0ffbedfdfea36e8586365d6a77cc8421534b395df48"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.02569",
    "kind": "arxiv",
    "version": 3
  }
}