Pith Number

pith:VE2KPZGK

pith:2005:VE2KPZGKYIL5FV5XKX5Z4BJTZY

not attested not anchored not stored refs pending

Chemistry and line emission of outer protoplanetary disks

Cornelis P. Dullemond, Inga Kamp, Jesus Emilio Enriquez, Michiel Hogerheijde

arxiv:astro-ph/0509643 v1 · 2005-09-21 · astro-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{VE2KPZGKYIL5FV5XKX5Z4BJTZY}

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	2026-05-18T01:40:33.413640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a934a7e4cac217d2d7b755fb9e0533ce009dbe96b7092e98ac01b7d73fd85fcd

Aliases

arxiv: astro-ph/0509643 · arxiv_version: astro-ph/0509643v1 · doi: 10.48550/arxiv.astro-ph/0509643 · pith_short_12: VE2KPZGKYIL5 · pith_short_16: VE2KPZGKYIL5FV5X · pith_short_8: VE2KPZGK

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/VE2KPZGKYIL5FV5XKX5Z4BJTZY \
  | 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: a934a7e4cac217d2d7b755fb9e0533ce009dbe96b7092e98ac01b7d73fd85fcd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8046cb0bf74aba67f0e8b8ae1dc9b4efc8144675ddc61140d86d103a43910e9",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-09-21T18:15:30Z",
    "title_canon_sha256": "00bd191aaa6655ddfab5a68620b24403687936b9d63e75f6448c0524faf0fd24"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0509643",
    "kind": "arxiv",
    "version": 1
  }
}