Pith Number

pith:5D4K2ZL6

pith:1998:5D4K2ZL6M6OVYLJHBE2UWFJHQG

not attested not anchored not stored refs pending

Tomography of Polars

Andreas Staude, Axel D. Schwope, Claus Heerlein, Danny Steeghs, Keith Horne, Robert Schwarz

arxiv:astro-ph/9810061 v1 · 1998-10-05 · 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{5D4K2ZL6M6OVYLJHBE2UWFJHQG}

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	2026-07-04T14:16:04.922269Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8f8ad657e679d5c2d2709354b152781b24fe66a4042d4ac2c0ab29a798cb085

Aliases

arxiv: astro-ph/9810061 · arxiv_version: astro-ph/9810061v1 · doi: 10.48550/arxiv.astro-ph/9810061 · pith_short_12: 5D4K2ZL6M6OV · pith_short_16: 5D4K2ZL6M6OVYLJH · pith_short_8: 5D4K2ZL6

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/5D4K2ZL6M6OVYLJHBE2UWFJHQG \
  | 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: e8f8ad657e679d5c2d2709354b152781b24fe66a4042d4ac2c0ab29a798cb085

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1ec23ae8cf677b01771f50925a207941e58fa407db534ab953c6916136eb6cf8",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1998-10-05T12:21:56Z",
    "title_canon_sha256": "0ac6b300d424ed88b72cacef98a2c54e168d7a7f9e6d5e380634c14f6c435bba"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9810061",
    "kind": "arxiv",
    "version": 1
  }
}