Pith Number

pith:LHAI46UG

pith:2009:LHAI46UGPKB2UOZZCPFAJIBCW5

not attested not anchored not stored refs pending

Radiation-Hydrodynamic Models of X-Ray & EUV Photoevaporating Protoplanetary Discs

B. Ercolano, C. J. Clarke, J. E. Owen, R. D. Alexander

arxiv:0909.4309 v1 · 2009-09-24 · 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{LHAI46UGPKB2UOZZCPFAJIBCW5}

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	2026-05-18T02:11:38.272338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59c08e7a867a83aa3b3913ca04a022b7670acb1b60a5f71612db98a01a4e8672

Aliases

arxiv: 0909.4309 · arxiv_version: 0909.4309v1 · doi: 10.48550/arxiv.0909.4309 · pith_short_12: LHAI46UGPKB2 · pith_short_16: LHAI46UGPKB2UOZZ · pith_short_8: LHAI46UG

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/LHAI46UGPKB2UOZZCPFAJIBCW5 \
  | 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: 59c08e7a867a83aa3b3913ca04a022b7670acb1b60a5f71612db98a01a4e8672

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5196f82c95e25998c3ea8013503117f5e88717757d28a258071d1d09c47d750e",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-09-24T15:27:43Z",
    "title_canon_sha256": "7e988fb9d08e9934132fc470d921865f205f3db1a7959f5c6465774216a25c7b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0909.4309",
    "kind": "arxiv",
    "version": 1
  }
}