Pith Number

pith:WA7FIECY

pith:2016:WA7FIECYDMCMC4VMQYXTJ5UCBA

not attested not anchored not stored refs pending

Chandra Observation of Abell 1142: A Cool-Core Cluster Lacking a Central Brightest Cluster Galaxy?

(2) UC Irvine, (3) INAF-IASF-Milano), David A. Buote (2), Fabio Gastaldello (3), Reinout van Weeren (1) ((1) Harvard-Smithsonian Center for Astrophysics, Yuanyuan Su (1)

arxiv:1602.06549 v1 · 2016-02-21 · astro-ph.HE · astro-ph.GA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WA7FIECYDMCMC4VMQYXTJ5UCBA}

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	2026-05-18T01:16:40.662467Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b03e5410581b04c172ac862f34f682080eaffb792d729526b2137a549d32ec80

Aliases

arxiv: 1602.06549 · arxiv_version: 1602.06549v1 · doi: 10.48550/arxiv.1602.06549 · pith_short_12: WA7FIECYDMCM · pith_short_16: WA7FIECYDMCMC4VM · pith_short_8: WA7FIECY

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/WA7FIECYDMCMC4VMQYXTJ5UCBA \
  | 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: b03e5410581b04c172ac862f34f682080eaffb792d729526b2137a549d32ec80

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c14731646ba58531e10aa569025723a8ef0cdcdc0e026f91fe0182588d8eb89",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-02-21T16:45:26Z",
    "title_canon_sha256": "1b04463bc7f2db0c9e72ca3a7d90763efbb5210c29ac4ca664ea4d280fb9d788"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1602.06549",
    "kind": "arxiv",
    "version": 1
  }
}