Pith Number

pith:YK7J3Y4Z

pith:2009:YK7J3Y4ZGX52K3DFSIKCZQIJOV

not attested not anchored not stored refs pending

Population Synthesis of Radio Pulsars in the Fermi Era

Alice K. Harding, Erin Nagelkirk, Melanie Stam, Peter L. Gonthier

arxiv:0912.3539 v2 · 2009-12-18 · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YK7J3Y4ZGX52K3DFSIKCZQIJOV}

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	2026-05-18T01:04:59.366338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c2be9de39935fba56c6592142cc109754b2ad39937e6d10319096adc78ce36f3

Aliases

arxiv: 0912.3539 · arxiv_version: 0912.3539v2 · doi: 10.48550/arxiv.0912.3539 · pith_short_12: YK7J3Y4ZGX52 · pith_short_16: YK7J3Y4ZGX52K3DF · pith_short_8: YK7J3Y4Z

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/YK7J3Y4ZGX52K3DFSIKCZQIJOV \
  | 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: c2be9de39935fba56c6592142cc109754b2ad39937e6d10319096adc78ce36f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "079e5b666b04b60da6e9cf2cc4e4a874b21ce4db64f5ae449a7756fd23044640",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2009-12-18T15:47:49Z",
    "title_canon_sha256": "0641913c76e5e811c1adc95630f99a263c3afc4bc1a70532aac2b573ad9fd32e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0912.3539",
    "kind": "arxiv",
    "version": 2
  }
}