Pith Number

pith:56HCJ2CZ

pith:2001:56HCJ2CZRYMTBZR4XU44K2EUHN

not attested not anchored not stored refs pending

Chandra Observations of Cold Fronts in Cluster of Galaxies

A. Vikhlinin, M. Markevitch, P. Mazzotta, W. R. Forman

arxiv:astro-ph/0109420 v1 · 2001-09-24 · 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{56HCJ2CZRYMTBZR4XU44K2EUHN}

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	2026-07-04T14:11:30.001903Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef8e24e8598e1930e63cbd39c568943b6879324e3ac38e09788a25a32e482da3

Aliases

arxiv: astro-ph/0109420 · arxiv_version: astro-ph/0109420v1 · doi: 10.48550/arxiv.astro-ph/0109420 · pith_short_12: 56HCJ2CZRYMT · pith_short_16: 56HCJ2CZRYMTBZR4 · pith_short_8: 56HCJ2CZ

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/56HCJ2CZRYMTBZR4XU44K2EUHN \
  | 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: ef8e24e8598e1930e63cbd39c568943b6879324e3ac38e09788a25a32e482da3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5c401289b8e1daf32c7c27a8bcdbee22b0629641156ff224847fee4bb8e2e01c",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2001-09-24T16:41:37Z",
    "title_canon_sha256": "c556f646052f8ae53d6ed4068b80c88b6483b552bfeb516ddf0fb8c78ecf5c7f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0109420",
    "kind": "arxiv",
    "version": 1
  }
}