Pith Number

pith:PLL53HCD

pith:2007:PLL53HCDBL6TF6YA2I3RG5B54C

not attested not anchored not stored refs pending

XMM-Newton X-ray Observations of the Wolf-Rayet Binary System WR 147

M. Guedel, S.A. Zhekov, S.L. Skinner, W. Schmutz

arxiv:0704.3235 v1 · 2007-04-24 · 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{PLL53HCDBL6TF6YA2I3RG5B54C}

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	2026-07-04T15:44:16.997807Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ad7dd9c430afd32fb00d23713743de088a15d6afc48dcda87e1e16c8bbad1f0

Aliases

arxiv: 0704.3235 · arxiv_version: 0704.3235v1 · doi: 10.48550/arxiv.0704.3235 · pith_short_12: PLL53HCDBL6T · pith_short_16: PLL53HCDBL6TF6YA · pith_short_8: PLL53HCD

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/PLL53HCDBL6TF6YA2I3RG5B54C \
  | 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: 7ad7dd9c430afd32fb00d23713743de088a15d6afc48dcda87e1e16c8bbad1f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "67fe55912d33bcb541f501f684df1bab9badc802ad8318fce13e85524f5bdddd",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2007-04-24T16:33:41Z",
    "title_canon_sha256": "78e0414fe1ea30b44f58f628b06d976040f42d1890c6b1037b7e6c783654cb3d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0704.3235",
    "kind": "arxiv",
    "version": 1
  }
}