Pith Number

pith:VUDDWMNT

pith:2003:VUDDWMNTRDBTI74RVMPDLNN3K3

not attested not anchored not stored refs pending

Physical conditions in the planetary nebula Abell 30

M.J. Barlow, R. Wesson, X-W. Liu

arxiv:astro-ph/0301119 v1 · 2003-01-07 · 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{VUDDWMNTRDBTI74RVMPDLNN3K3}

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	2026-07-04T16:35:49.541869Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad063b31b388c3347f91ab1e35b5bb56c2a7a855b9150e78bf5e48f0e09f2a3f

Aliases

arxiv: astro-ph/0301119 · arxiv_version: astro-ph/0301119v1 · doi: 10.48550/arxiv.astro-ph/0301119 · pith_short_12: VUDDWMNTRDBT · pith_short_16: VUDDWMNTRDBTI74R · pith_short_8: VUDDWMNT

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/VUDDWMNTRDBTI74RVMPDLNN3K3 \
  | 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: ad063b31b388c3347f91ab1e35b5bb56c2a7a855b9150e78bf5e48f0e09f2a3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9bc2990abc1814442e1ec0b9e8c3861f1525ce817452498f98dfcc7f974b54b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-01-07T19:00:23Z",
    "title_canon_sha256": "0b244df34f976ce5030271d808530b4654ef10fb456967d964780ca99bfd7f6b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0301119",
    "kind": "arxiv",
    "version": 1
  }
}