Pith Number

pith:C4Q5WAIJ

pith:1999:C4Q5WAIJ5XLJFYF4X7CSRHJM5Y

not attested not anchored not stored refs pending

Physics of Neutron Star Kicks

Dong Lai (Cornell)

arxiv:astro-ph/9912522 v1 · 1999-12-27 · 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{C4Q5WAIJ5XLJFYF4X7CSRHJM5Y}

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	2026-05-18T01:21:49.715293Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1721db0109edd692e0bcbfc5289d2cee1829807ff0949f267e81d9c5c3c2d436

Aliases

arxiv: astro-ph/9912522 · arxiv_version: astro-ph/9912522v1 · doi: 10.48550/arxiv.astro-ph/9912522 · pith_short_12: C4Q5WAIJ5XLJ · pith_short_16: C4Q5WAIJ5XLJFYF4 · pith_short_8: C4Q5WAIJ

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/C4Q5WAIJ5XLJFYF4X7CSRHJM5Y \
  | 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: 1721db0109edd692e0bcbfc5289d2cee1829807ff0949f267e81d9c5c3c2d436

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab255ede3d12029cb9506fa2ee421d1cad986d30b0a3a55030ff53e00c35ba65",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "1999-12-27T19:57:38Z",
    "title_canon_sha256": "ed5774a866d23c7bca4d9799190e675d693126a29f0bf16594bc2a22c87e4c28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/9912522",
    "kind": "arxiv",
    "version": 1
  }
}