Pith Number

pith:WDE4W3SB

pith:2005:WDE4W3SBGH6NM6JKVNANMVNMPB

not attested not anchored not stored refs pending

Relativistic Binary Pulsars with Black-Hole Companions

Eric Pfahl (UVa), Philipp Podsiadlowski (Oxford), Saul Rappaport (MIT)

arxiv:astro-ph/0502122 v2 · 2005-02-05 · 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{WDE4W3SBGH6NM6JKVNANMVNMPB}

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	2026-07-04T16:50:46.907164Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b0c9cb6e4131fcd6792aab40d655ac784e5144f2241b2562645f5036ab2ef3a8

Aliases

arxiv: astro-ph/0502122 · arxiv_version: astro-ph/0502122v2 · doi: 10.48550/arxiv.astro-ph/0502122 · pith_short_12: WDE4W3SBGH6N · pith_short_16: WDE4W3SBGH6NM6JK · pith_short_8: WDE4W3SB

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/WDE4W3SBGH6NM6JKVNANMVNMPB \
  | 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: b0c9cb6e4131fcd6792aab40d655ac784e5144f2241b2562645f5036ab2ef3a8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1b06d34d5b9cc309706a13dee32b8cd967799e37628a3edbb0cc17c083c01735",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2005-02-05T18:28:51Z",
    "title_canon_sha256": "4aab36da4018c6b2568fa7ede9cfb4bb9bca027625c8361826279dad0e6095af"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0502122",
    "kind": "arxiv",
    "version": 2
  }
}