Pith Number

pith:U6XFXIGJ

pith:2021:U6XFXIGJCAT2IEYBPJ2AFCT5KZ

not attested not anchored not stored refs pending

Core Mass Estimates in Strong Lensing Galaxy Clusters Using a Single-Halo Lens Model

A. Niemiec, G. Mahler, J. D. Remolina Gonz\'alez, K. Sharon, L. E. Bleem, M. Gladders, N. Li

arxiv:2102.06351 v1 · 2021-02-12 · 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{U6XFXIGJCAT2IEYBPJ2AFCT5KZ}

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	2026-07-05T02:42:48.571499Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a7ae5ba0c91027a413017a74028a7d564fb17fefe68fa5b75b8e1f0fc2ff2d9d

Aliases

arxiv: 2102.06351 · arxiv_version: 2102.06351v1 · doi: 10.48550/arxiv.2102.06351 · pith_short_12: U6XFXIGJCAT2 · pith_short_16: U6XFXIGJCAT2IEYB · pith_short_8: U6XFXIGJ

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/U6XFXIGJCAT2IEYBPJ2AFCT5KZ \
  | 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: a7ae5ba0c91027a413017a74028a7d564fb17fefe68fa5b75b8e1f0fc2ff2d9d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "31385caeaab49d0090d70368c4a013e4fe0b55a1c35d6d5ffd62bc92645c0a87",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2021-02-12T05:21:22Z",
    "title_canon_sha256": "d397d931dbf4d9df7f828ed8cd1bedc06c7e78abb17ed229c8bd7b328cf8971a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.06351",
    "kind": "arxiv",
    "version": 1
  }
}