Pith Number

pith:CMO7CZDS

pith:2011:CMO7CZDSLXGIDBAX4R2TBV5NAZ

not attested not anchored not stored refs pending

The Small Isolated Gas Rich Irregular Dwarf (SIGRID) Galaxy Sample: Description and First Results

David C Nicholls, Gerhardt R Meurer, Helmut Jerjen, Michael A Dopita

arxiv:1107.3898 v1 · 2011-07-20 · 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{CMO7CZDSLXGIDBAX4R2TBV5NAZ}

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	2026-05-18T02:01:14.482109Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

131df164725dcc818417e47530d7ad064b635c0f1a58b67153391879c7cec5b1

Aliases

arxiv: 1107.3898 · arxiv_version: 1107.3898v1 · doi: 10.48550/arxiv.1107.3898 · pith_short_12: CMO7CZDSLXGI · pith_short_16: CMO7CZDSLXGIDBAX · pith_short_8: CMO7CZDS

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/CMO7CZDSLXGIDBAX4R2TBV5NAZ \
  | 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: 131df164725dcc818417e47530d7ad064b635c0f1a58b67153391879c7cec5b1

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f2686cbfa79894bab5de0dca9a317a673eed3753c45735245dedcbd12f21329e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-07-20T05:48:45Z",
    "title_canon_sha256": "acb133574d8f4859bf6fadb1f1dfe1ca9226e75c72da8db8d46148e77a64295b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1107.3898",
    "kind": "arxiv",
    "version": 1
  }
}