Pith Number

pith:BD27WVQX

pith:2018:BD27WVQXLQLX4NAIMEVM4JCBBV

not attested not anchored not stored refs pending

Evolution of Galaxy Types and HI Gas Contents in Galaxy Groups

Mei Ai, Ming Zhu

arxiv:1810.05408 v1 · 2018-10-12 · 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{BD27WVQXLQLX4NAIMEVM4JCBBV}

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	2026-05-18T00:03:30.681434Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

08f5fb56175c177e3408612ace24410d62e8703c6ad4facc7ffb856c687f66d0

Aliases

arxiv: 1810.05408 · arxiv_version: 1810.05408v1 · doi: 10.48550/arxiv.1810.05408 · pith_short_12: BD27WVQXLQLX · pith_short_16: BD27WVQXLQLX4NAI · pith_short_8: BD27WVQX

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/BD27WVQXLQLX4NAIMEVM4JCBBV \
  | 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: 08f5fb56175c177e3408612ace24410d62e8703c6ad4facc7ffb856c687f66d0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "952a4019839e22502be860bd13a5e02a83a1b64fe21ff1e68950e1075e068265",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-10-12T08:46:28Z",
    "title_canon_sha256": "d25137a578ed450712fee51a2f94ebc91de190d374e573bba12e3d8c8b310042"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.05408",
    "kind": "arxiv",
    "version": 1
  }
}