Pith Number

pith:IEHK2QE5

pith:2001:IEHK2QE52I7BPRQRK3BPCTEQVN

not attested not anchored not stored refs pending

Discovery of a 1247 s pulsar in the Be X-ray binary SAX J2239.3+6116

C.B. Markwardt (NASA-GSFC), J.J.M. in 't Zand (Utrecht University & SRON), J. Swank, R.H.D. Corbet

arxiv:astro-ph/0110695 v1 · 2001-10-31 · 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{IEHK2QE52I7BPRQRK3BPCTEQVN}

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	2026-07-04T16:24:23.386965Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

410ead409dd23e17c61156c2f14c90ab74c80da97d137854522bda4137a61356

Aliases

arxiv: astro-ph/0110695 · arxiv_version: astro-ph/0110695v1 · doi: 10.48550/arxiv.astro-ph/0110695 · pith_short_12: IEHK2QE52I7B · pith_short_16: IEHK2QE52I7BPRQR · pith_short_8: IEHK2QE5

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/IEHK2QE52I7BPRQRK3BPCTEQVN \
  | 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: 410ead409dd23e17c61156c2f14c90ab74c80da97d137854522bda4137a61356

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9466398256253a9e34274866dde7e7c7f23e92f6d98191bd31238ad25c7e4d89",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-10-31T13:08:53Z",
    "title_canon_sha256": "0f976037f5f557bdf77c4fd5186efa36ae2e3c009be9ba4ebe9776701c107a64"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0110695",
    "kind": "arxiv",
    "version": 1
  }
}