Pith Number

pith:7Y7WRVXC

pith:2001:7Y7WRVXCJ2J3GZRTQS7DFPDYZA

not attested not anchored not stored refs pending

Binary Population Synthesis: Methods, Normalization, and Surprises

2) ((1) Harvard-Smithsonian Center for Astrophysics, (2) Nicolaus Copernicus Astronomical Center), K. Belczynski (1, V. Kalogera (1)

arxiv:astro-ph/0102229 v1 · 2001-02-13 · 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{7Y7WRVXCJ2J3GZRTQS7DFPDYZA}

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	2026-05-18T02:04:05.274377Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fe3f68d6e24e93b3663384be32bc78c82f865454e2f7d25108b7654c59e2f00c

Aliases

arxiv: astro-ph/0102229 · arxiv_version: astro-ph/0102229v1 · doi: 10.48550/arxiv.astro-ph/0102229 · pith_short_12: 7Y7WRVXCJ2J3 · pith_short_16: 7Y7WRVXCJ2J3GZRT · pith_short_8: 7Y7WRVXC

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/7Y7WRVXCJ2J3GZRTQS7DFPDYZA \
  | 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: fe3f68d6e24e93b3663384be32bc78c82f865454e2f7d25108b7654c59e2f00c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5a285ccb61de64bfbe443a73cc7f93ac73af6c4bec2a88c40614142d81122948",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-02-13T15:31:45Z",
    "title_canon_sha256": "6371715262b713544eb5050fce01e15837c1d5a0aad9a0b4ec556e3fe452fb53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0102229",
    "kind": "arxiv",
    "version": 1
  }
}