Pith Number

pith:7BTW7IZ5

pith:1999:7BTW7IZ53X6C2BV5B7M4DWLXER

not attested not anchored not stored refs pending

Disk-Anchored Magnetic Propellers - A Cure for the SW Sex Syndrome

Keith Horne

arxiv:astro-ph/9901007 v1 · 1999-01-03 · 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{7BTW7IZ53X6C2BV5B7M4DWLXER}

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.

Cited by

1 paper in Pith

Fast optical spectroscopic observations of PSR J1023+0038 over one orbital period

Receipt and verification

First computed	2026-07-04T14:16:28.347581Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f8676fa33dddfc2d06bd0fd9c1d977245ef9e821786058948979bc02a1e90716

Aliases

arxiv: astro-ph/9901007 · arxiv_version: astro-ph/9901007v1 · doi: 10.48550/arxiv.astro-ph/9901007 · pith_short_12: 7BTW7IZ53X6C · pith_short_16: 7BTW7IZ53X6C2BV5 · pith_short_8: 7BTW7IZ5

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/7BTW7IZ53X6C2BV5B7M4DWLXER \
  | 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: f8676fa33dddfc2d06bd0fd9c1d977245ef9e821786058948979bc02a1e90716

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c419bc40a9f6aaf64962267958e9f9794e33e4d30e4a0ba3562c2a7f7b7972b",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-01-03T16:59:12Z",
    "title_canon_sha256": "5967a9925be6fdb4692ecd7d4ad23707e6575e0706f00fb6dfe251493ebf8c6d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9901007",
    "kind": "arxiv",
    "version": 1
  }
}