Pith Number

pith:OPXMGX3D

pith:2016:OPXMGX3DDV2CQHJTFTJ3WAZFCL

not attested not anchored not stored refs pending

The merging galaxy cluster A520 --- a broken-up cool core, a dark subcluster, and an X-ray channel

Maxim Markevitch, Qian Wang, Simona Giacintucci

arxiv:1603.05232 v3 · 2016-03-16 · astro-ph.CO · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPXMGX3DDV2CQHJTFTJ3WAZFCL}

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	2026-05-18T00:41:08.250650Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73eec35f631d74281d332cd3bb032512dd3dad49a60c3e5f398a3d870b1f22e7

Aliases

arxiv: 1603.05232 · arxiv_version: 1603.05232v3 · doi: 10.48550/arxiv.1603.05232 · pith_short_12: OPXMGX3DDV2C · pith_short_16: OPXMGX3DDV2CQHJT · pith_short_8: OPXMGX3D

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/OPXMGX3DDV2CQHJTFTJ3WAZFCL \
  | 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: 73eec35f631d74281d332cd3bb032512dd3dad49a60c3e5f398a3d870b1f22e7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1712f73460bc9f9dbf44e717b018f060ee3b75671136f1d4e74c3f437189bd2d",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2016-03-16T19:36:41Z",
    "title_canon_sha256": "f8f572a62cc2cf57ce0c1714699e7ff7907af053489ddc1423bc25fe44988c74"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1603.05232",
    "kind": "arxiv",
    "version": 3
  }
}