Pith Number

pith:WJQDGR6C

pith:2017:WJQDGR6CM6WFCYOI6SW557SGIQ

not attested not anchored not stored refs pending

The contribution of HI-bearing ultra-diffuse galaxies to the cosmic number density of galaxies

Aaron J. Romanowsky, Elizabeth A. K. Adams, Emmanouil Papastergis, Lukas Leisman, L. Y. Aaron Yung, Michael G. Jones, Rachel S. Somerville, Viraj Pandya

arxiv:1712.01855 v2 · 2017-12-05 · 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{WJQDGR6CM6WFCYOI6SW557SGIQ}

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	2026-05-18T00:13:31.081090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2603347c267ac5161c8f4addefe464439d9169ee88e26d4b3c665b5948bc52f

Aliases

arxiv: 1712.01855 · arxiv_version: 1712.01855v2 · doi: 10.48550/arxiv.1712.01855 · pith_short_12: WJQDGR6CM6WF · pith_short_16: WJQDGR6CM6WFCYOI · pith_short_8: WJQDGR6C

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/WJQDGR6CM6WFCYOI6SW557SGIQ \
  | 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: b2603347c267ac5161c8f4addefe464439d9169ee88e26d4b3c665b5948bc52f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bf640070eb3278ec9eefcdaf1f6adc8b07e7f17d728bf5312801468f092d6719",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-12-05T19:00:09Z",
    "title_canon_sha256": "357bd8b7fe83efff6213d365bc174982fe132dfda2f1739fde4c2ba6f4292abd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.01855",
    "kind": "arxiv",
    "version": 2
  }
}