Pith Number

pith:CQSMHYID

pith:2018:CQSMHYID7N666GXUDKLZAPFRRB

not attested not anchored not stored refs pending

An HI study of the collisional ring galaxy NGC 922

Ahmed Elagali, B\"arbel S. Koribalski, Kenji Bekki, Lister Staveley-Smith, Martin Zwaan, O. Ivy Wong, Se-Heon Oh

arxiv:1804.07037 v1 · 2018-04-19 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQSMHYID7N666GXUDKLZAPFRRB}

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	2026-05-18T00:18:04.483678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1424c3e103fb7def1af41a97903cb1885b6d6efe2f95476f4f060e4abf1a64a7

Aliases

arxiv: 1804.07037 · arxiv_version: 1804.07037v1 · doi: 10.48550/arxiv.1804.07037 · pith_short_12: CQSMHYID7N66 · pith_short_16: CQSMHYID7N666GXU · pith_short_8: CQSMHYID

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/CQSMHYID7N666GXUDKLZAPFRRB \
  | 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: 1424c3e103fb7def1af41a97903cb1885b6d6efe2f95476f4f060e4abf1a64a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7ed52aa41c43549f6dfc998a4191df9094129de95ddc843076f4cd6d8c74a48c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-04-19T08:45:48Z",
    "title_canon_sha256": "0cee7e16f948dff440959ff3b4563ec014483268d5932d34ff64b54dc6de74a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07037",
    "kind": "arxiv",
    "version": 1
  }
}