Pith Number

pith:4AHRTHXP

pith:2009:4AHRTHXPDUBNYY4INOL4VEZ6VN

not attested not anchored not stored refs pending

Hot and cool water in Herbig Ae protoplanetary disks. A challenge for Herschel

Inga Kamp, Michiel R. Hogerheijde, Peter Woitke, Wing-Fai Thi

arxiv:0906.0448 v2 · 2009-06-02 · 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{4AHRTHXPDUBNYY4INOL4VEZ6VN}

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	2026-05-18T02:13:29.813064Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e00f199eef1d02dc63886b97ca933eab76f4eec053e443cdfc78301f8d8a481f

Aliases

arxiv: 0906.0448 · arxiv_version: 0906.0448v2 · doi: 10.48550/arxiv.0906.0448 · pith_short_12: 4AHRTHXPDUBN · pith_short_16: 4AHRTHXPDUBNYY4I · pith_short_8: 4AHRTHXP

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/4AHRTHXPDUBNYY4INOL4VEZ6VN \
  | 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: e00f199eef1d02dc63886b97ca933eab76f4eec053e443cdfc78301f8d8a481f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dca0aed4eb8397e5d6e0417c4637358ecfd343b944efea684b4aa7eeb2d001c7",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2009-06-02T09:27:26Z",
    "title_canon_sha256": "4225afadeb971445dc02af77a454b82c4902ffe7bdd1b931e08d77441024af02"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0906.0448",
    "kind": "arxiv",
    "version": 2
  }
}