Pith Number

pith:F47EZOVS

pith:2002:F47EZOVS6CEKS7QHSPRQQADV5T

not attested not anchored not stored refs pending

Chandra Imaging of the Gamma-Ray Source GeV J1809-2327

Mallory S.E. Roberts, Nobuyuki Kawai, Roger W. Romani, Timothy M. Braje

arxiv:astro-ph/0201071 v1 · 2002-01-06 · 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{F47EZOVS6CEKS7QHSPRQQADV5T}

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	2026-05-18T01:07:45.192951Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2f3e4cbab2f088a97e0793e3080075ecc36af8d51422eb0309f960d7d95753a9

Aliases

arxiv: astro-ph/0201071 · arxiv_version: astro-ph/0201071v1 · doi: 10.48550/arxiv.astro-ph/0201071 · pith_short_12: F47EZOVS6CEK · pith_short_16: F47EZOVS6CEKS7QH · pith_short_8: F47EZOVS

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/F47EZOVS6CEKS7QHSPRQQADV5T \
  | 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: 2f3e4cbab2f088a97e0793e3080075ecc36af8d51422eb0309f960d7d95753a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "451082a9d52c89e02ee23726e64b902e9def0eb34de907eaf098e3627707376e",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-01-06T01:28:42Z",
    "title_canon_sha256": "ca92112f3058b1d7f71ddb057ec6f1f7ac87e9b4c872bdd67a824f2c04afa708"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0201071",
    "kind": "arxiv",
    "version": 1
  }
}