Pith Number

pith:YBXLYWR7

pith:2011:YBXLYWR7U3WM52IIHTM33TUWKD

not attested not anchored not stored refs pending

Faint young Sun paradox remains

Colin Goldblatt, Kevin J. Zahnle

arxiv:1105.5425 v2 · 2011-05-26 · astro-ph.EP · physics.ao-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YBXLYWR7U3WM52IIHTM33TUWKD}

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	2026-05-18T04:21:10.282120Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c06ebc5a3fa6eccee9083cd9bdce9650e41f73492a7a11687aab7208f7f6ee60

Aliases

arxiv: 1105.5425 · arxiv_version: 1105.5425v2 · doi: 10.48550/arxiv.1105.5425 · pith_short_12: YBXLYWR7U3WM · pith_short_16: YBXLYWR7U3WM52II · pith_short_8: YBXLYWR7

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/YBXLYWR7U3WM52IIHTM33TUWKD \
  | 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: c06ebc5a3fa6eccee9083cd9bdce9650e41f73492a7a11687aab7208f7f6ee60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6341d87cae41ab8a316d8673a29bc013a18ec2bc96fb97f34e30cd048efb77e5",
    "cross_cats_sorted": [
      "physics.ao-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-05-26T23:11:39Z",
    "title_canon_sha256": "24e9d513b768210a13f12a7c6376b1c19444bb34155ae9ba715f622cb1384825"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1105.5425",
    "kind": "arxiv",
    "version": 2
  }
}