Pith Number

pith:HAS4JR33

pith:1997:HAS4JR33QKE3A7XYQPVGRTLLUA

not attested not anchored not stored refs pending

A detached double degenerate with a 1.4 hr orbital period

(2) Osservatorio Astronomico di Bologna), A. Bragaglia (2) ((1) University of Southampton, C. Moran (1), T. R. Marsh (1)

arxiv:astro-ph/9704240 v1 · 1997-04-24 · 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{HAS4JR33QKE3A7XYQPVGRTLLUA}

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	2026-05-18T01:40:17.616529Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3825c4c77b8289b07ef883ea68cd6ba021ab08fd59aa7f637c0fd6d773914a57

Aliases

arxiv: astro-ph/9704240 · arxiv_version: astro-ph/9704240v1 · doi: 10.48550/arxiv.astro-ph/9704240 · pith_short_12: HAS4JR33QKE3 · pith_short_16: HAS4JR33QKE3A7XY · pith_short_8: HAS4JR33

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/HAS4JR33QKE3A7XYQPVGRTLLUA \
  | 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: 3825c4c77b8289b07ef883ea68cd6ba021ab08fd59aa7f637c0fd6d773914a57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d2a33d74dfcdf4c7ce865c68d90610c4e42ee8503d4bc6ccc2768ad42c1e41a4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1997-04-24T15:37:23Z",
    "title_canon_sha256": "ffb460aa2d0814f9683c8a25f42d40e60ecb5c69c485a5d663d559b02e02c8b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9704240",
    "kind": "arxiv",
    "version": 1
  }
}