Pith Number

pith:O5HN5F2F

pith:2025:O5HN5F2FN75JMY767WKJOOKXRE

not attested not anchored not stored refs pending

A Semi-Empirical Estimate of Solar EUV Evolution from 10 Myr to 10 Gyr

Alexander Brown (University of Colorado), Allison Youngblood (NASA/GSFC), Cynthia Froning (SwRI), David Wilson (University of Colorado), Girish Duvvuri (Vanderbilt), J. Sebastian Pineda (University of Colorado), Kevin France (University of Colorado), Kosuke Namekata (NASA/GSFC, Kyoto University), P. Christian Schneider (Christian-Albrects University), Tristen Sextro (Penn State University), Vladimir Airapetian (NASA/GSFC), Yuta Notsu (University of Colorado)

arxiv:2507.15953 v1 · 2025-07-21 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{O5HN5F2FN75JMY767WKJOOKXRE}

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	2026-07-05T11:40:59.883585Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

774ede97456ffa9663fefd94973957891af1a573aef3e11831543dcd787d145c

Aliases

arxiv: 2507.15953 · arxiv_version: 2507.15953v1 · doi: 10.48550/arxiv.2507.15953 · pith_short_12: O5HN5F2FN75J · pith_short_16: O5HN5F2FN75JMY76 · pith_short_8: O5HN5F2F

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/O5HN5F2FN75JMY767WKJOOKXRE \
  | 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: 774ede97456ffa9663fefd94973957891af1a573aef3e11831543dcd787d145c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6dd0fe5738c7747c3067c60ab6e013f5678e7f1f64ef95b43ac248039d129538",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-07-21T18:00:10Z",
    "title_canon_sha256": "968cbe5b5aa0945dc8b660c4278bf71b072d8397ce3cb65afaab4541c2532b22"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.15953",
    "kind": "arxiv",
    "version": 1
  }
}