Pith Number

pith:LAUNB7SG

pith:2009:LAUNB7SGY75YRSE64UQKLXVZOM

not attested not anchored not stored refs pending

Collimated Fast Wind in the Pre-Planetary Nebula CRL 618

Chin-Fei Lee, Ming-Chien Hsu, Raghvendra Sahai

arxiv:0902.3500 v1 · 2009-02-20 · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LAUNB7SGY75YRSE64UQKLXVZOM}

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	2026-05-18T04:29:16.387113Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5828d0fe46c7fb88c89ee520a5deb97326c41d9c01d71bc732ace6007ebb48f1

Aliases

arxiv: 0902.3500 · arxiv_version: 0902.3500v1 · doi: 10.48550/arxiv.0902.3500 · pith_short_12: LAUNB7SGY75Y · pith_short_16: LAUNB7SGY75YRSE6 · pith_short_8: LAUNB7SG

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/LAUNB7SGY75YRSE64UQKLXVZOM \
  | 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: 5828d0fe46c7fb88c89ee520a5deb97326c41d9c01d71bc732ace6007ebb48f1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "777c068efa7046fbfb04f05e84a9c37cca0ec683397ecf6bb23ec564d420a651",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-20T02:14:28Z",
    "title_canon_sha256": "b2a2b11cc7ff81bed900ff240c1fde300f97440d7395c5675519314f8927c2f7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.3500",
    "kind": "arxiv",
    "version": 1
  }
}