Pith Number

pith:5D55GVIW

pith:2012:5D55GVIWSNTAZFELER5YUX6QFE

not attested not anchored not stored refs pending

On Dark Peaks and Missing Mass: A Weak Lensing Mass Reconstruction of the Merging Cluster System Abell 520

Anthony H. Gonzalez, Dennis Zaritsky, Douglas Clowe, Marusa Bradac, Maxim Markevitch, Richard Massey, Sun Mi Chung

arxiv:1209.2143 v1 · 2012-09-10 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5D55GVIWSNTAZFELER5YUX6QFE}

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	2026-05-18T01:54:37.348810Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e8fbd3551693660c948b247b8a5fd02907042710651b3f76fd519392f1572631

Aliases

arxiv: 1209.2143 · arxiv_version: 1209.2143v1 · doi: 10.48550/arxiv.1209.2143 · pith_short_12: 5D55GVIWSNTA · pith_short_16: 5D55GVIWSNTAZFEL · pith_short_8: 5D55GVIW

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/5D55GVIWSNTAZFELER5YUX6QFE \
  | 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: e8fbd3551693660c948b247b8a5fd02907042710651b3f76fd519392f1572631

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "806c250c7da9d29a10b87617faac3d84fcb7d044a81fc58d8a61db4c9290961e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-09-10T20:19:05Z",
    "title_canon_sha256": "cd2f18e82a941b4890733899f1389b1e0db3aced53f0700b48e5e5d2b9fce8aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1209.2143",
    "kind": "arxiv",
    "version": 1
  }
}