Pith Number

pith:D4EHA7YL

pith:2009:D4EHA7YLMRUSZ2NBA4SE6IMW4P

not attested not anchored not stored refs pending

Biological Damage due to Photospheric, Chromospheric and Flare Radiation in the Environments of Main-Sequence Stars

E. F. Guinan, M. Cuntz, R. L. Kurucz

arxiv:0911.1982 v1 · 2009-11-10 · astro-ph.EP · 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{D4EHA7YLMRUSZ2NBA4SE6IMW4P}

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	2026-05-18T02:10:48.972162Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f08707f0b64692ce9a107244f2196e3e0b68b6280b0c3586b465ae94095c043

Aliases

arxiv: 0911.1982 · arxiv_version: 0911.1982v1 · doi: 10.48550/arxiv.0911.1982 · pith_short_12: D4EHA7YLMRUS · pith_short_16: D4EHA7YLMRUSZ2NB · pith_short_8: D4EHA7YL

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/D4EHA7YLMRUSZ2NBA4SE6IMW4P \
  | 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: 1f08707f0b64692ce9a107244f2196e3e0b68b6280b0c3586b465ae94095c043

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c48945052ae9ca4a191e686ac90cb24aba34996d4071698e84c3dae941d0d806",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-11-10T20:08:17Z",
    "title_canon_sha256": "5190d0d40a5ca408a84b43594b1c4fa538d455b57aff4598224b8d24e33f5406"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0911.1982",
    "kind": "arxiv",
    "version": 1
  }
}