Pith Number

pith:6IG77NTX

pith:2006:6IG77NTXQZHT65QCJDT7WTTXCU

not attested not anchored not stored refs pending

The Formation of the Double Pulsar PSR J0737-3039A/B

C. A. McPhee, I. H. Stairs, M. Kramer, R. J. Dewey, S. E. Thorsett

arxiv:astro-ph/0609416 v2 · 2006-09-14 · 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{6IG77NTXQZHT65QCJDT7WTTXCU}

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	2026-07-04T16:59:24.432469Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f20dffb677864f3f760248e7fb4e771505b6c34ce52600a269da1012e9c93ed5

Aliases

arxiv: astro-ph/0609416 · arxiv_version: astro-ph/0609416v2 · doi: 10.48550/arxiv.astro-ph/0609416 · pith_short_12: 6IG77NTXQZHT · pith_short_16: 6IG77NTXQZHT65QC · pith_short_8: 6IG77NTX

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/6IG77NTXQZHT65QCJDT7WTTXCU \
  | 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: f20dffb677864f3f760248e7fb4e771505b6c34ce52600a269da1012e9c93ed5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d3c945d86683eebc562576462ba8a50f87ff22e191d15de6a7eee4b38da89b38",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-09-14T19:55:14Z",
    "title_canon_sha256": "15bf909ab570e5b96167357c536a659101cd3cc4581c663b9aa49692cd39c0fe"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0609416",
    "kind": "arxiv",
    "version": 2
  }
}