Pith Number

pith:6KCAKFKF

pith:2003:6KCAKFKFR7GR57F6FEG3R4T3QE

not attested not anchored not stored refs pending

Chandra X-Ray Spectral Analysis of Cooling Flow Clusters, 2A 0335+096 and Abell 2199

Akimitsu Ohto (1), Naomi Kawano (1), Yasushi Fukazawa (1) ((1) Hiroshima Univsersity)

arxiv:astro-ph/0308319 v1 · 2003-08-19 · 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{6KCAKFKFR7GR57F6FEG3R4T3QE}

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	2026-05-18T01:40:38.351896Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f2840515458fcd1efcbe290db8f27b8106947ffbb467af970239720f89a50775

Aliases

arxiv: astro-ph/0308319 · arxiv_version: astro-ph/0308319v1 · doi: 10.48550/arxiv.astro-ph/0308319 · pith_short_12: 6KCAKFKFR7GR · pith_short_16: 6KCAKFKFR7GR57F6 · pith_short_8: 6KCAKFKF

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/6KCAKFKFR7GR57F6FEG3R4T3QE \
  | 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: f2840515458fcd1efcbe290db8f27b8106947ffbb467af970239720f89a50775

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4200bab53e13c00bf87d4d8307478a047616b87aa1c68c765702016ce3ca5530",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-08-19T10:05:20Z",
    "title_canon_sha256": "b16470227138948afcbdae5949029db0ce2d2e486059f591c70050e6b6cd0346"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0308319",
    "kind": "arxiv",
    "version": 1
  }
}