Pith Number

pith:3AB2N4SB

pith:1998:3AB2N4SBE3L273Z2UDRHS7UXNN

not attested not anchored not stored refs pending

Jets and the shaping of the giant bipolar envelope of the planetary nebula KjPn 8

A. Lopez, W. Steffen

arxiv:astro-ph/9807021 v1 · 1998-07-02 · 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{3AB2N4SBE3L273Z2UDRHS7UXNN}

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	2026-07-04T16:06:49.794967Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d803a6f24126d7afef3aa0e2797e976b482b3dd11d9df570b8ca80a6f83cf305

Aliases

arxiv: astro-ph/9807021 · arxiv_version: astro-ph/9807021v1 · doi: 10.48550/arxiv.astro-ph/9807021 · pith_short_12: 3AB2N4SBE3L2 · pith_short_16: 3AB2N4SBE3L273Z2 · pith_short_8: 3AB2N4SB

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/3AB2N4SBE3L273Z2UDRHS7UXNN \
  | 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: d803a6f24126d7afef3aa0e2797e976b482b3dd11d9df570b8ca80a6f83cf305

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa5fe598d2a398212b8ea58182bc97830cc850ed07d238f09b8212b8cff3a94d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-07-02T09:49:52Z",
    "title_canon_sha256": "b326ba9b1c2e9ff2afd27743349135b7b500d591cf59ad511c8550970e4bc2f5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9807021",
    "kind": "arxiv",
    "version": 1
  }
}