Pith Number

pith:7JRHGNMW

pith:2007:7JRHGNMWZ6VKUR7O2XITIS2KXU

not attested not anchored not stored refs pending

Why do some intermediate polars show soft X-ray emission? A survey of XMM-Newton spectra

Coel Hellier (Keele University), P. A. Evans (Keele University, University of Leicester)

arxiv:0704.1388 v1 · 2007-04-11 · 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{7JRHGNMWZ6VKUR7O2XITIS2KXU}

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	2026-07-04T15:44:12.872793Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fa62733596cfaaaa47eed5d1344b4abd1a238151a739428dd19486b213c3fbb5

Aliases

arxiv: 0704.1388 · arxiv_version: 0704.1388v1 · doi: 10.48550/arxiv.0704.1388 · pith_short_12: 7JRHGNMWZ6VK · pith_short_16: 7JRHGNMWZ6VKUR7O · pith_short_8: 7JRHGNMW

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/7JRHGNMWZ6VKUR7O2XITIS2KXU \
  | 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: fa62733596cfaaaa47eed5d1344b4abd1a238151a739428dd19486b213c3fbb5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfb8b469db263df4f5c4adedc613421a16bcec835216e0d0af9fccff6aed593c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-11T10:11:33Z",
    "title_canon_sha256": "cf05ef695c89d721decca0b4a5ef0f1670e613b1942756cea55586714d1bad1e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.1388",
    "kind": "arxiv",
    "version": 1
  }
}