Pith Number

pith:NQ37AWDB

pith:2021:NQ37AWDBYDP3ZCTJV5GTHEUU2C

not attested not anchored not stored refs pending

The Sphere of Influence of the Bright Central Galaxies in the Diffuse Light of SDSS Clusters

(2) SHAO), Huanyuan Shan (2) ((1) SJTU, Xiaokai Chen (1), Ying Zu (1), Zhiwei Shao (1)

arxiv:2112.03934 v2 · 2021-12-07 · astro-ph.GA · 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{NQ37AWDBYDP3ZCTJV5GTHEUU2C}

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	2026-07-05T04:25:50.346329Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6c37f05861c0dfbc8a69af4d339294d09764c50a5ee80f929a87a105b9d7fe60

Aliases

arxiv: 2112.03934 · arxiv_version: 2112.03934v2 · doi: 10.48550/arxiv.2112.03934 · pith_short_12: NQ37AWDBYDP3 · pith_short_16: NQ37AWDBYDP3ZCTJ · pith_short_8: NQ37AWDB

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/NQ37AWDBYDP3ZCTJV5GTHEUU2C \
  | 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: 6c37f05861c0dfbc8a69af4d339294d09764c50a5ee80f929a87a105b9d7fe60

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "775742e7253e27c4ef66929956222e9680eb755ff7c2213fb6a6821e9c1fc937",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-12-07T19:00:04Z",
    "title_canon_sha256": "0a5d8f39fca97f6a954ca086ef2148d55b1b7bf97fd66dc5a56f1f15a23e5aa1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2112.03934",
    "kind": "arxiv",
    "version": 2
  }
}