Pith Number

pith:3ZPYPPWO

pith:2018:3ZPYPPWOJWPPLMCF2OM3WG7V32

not attested not anchored not stored refs pending

A catalog of merging dwarf galaxies in the local universe

Paula Calder\'on-Castillo, Pierre-Alain Duc, Rory Smith, Sanjaya Paudel, Suk Jin Yoo

arxiv:1807.07195 v1 · 2018-07-19 · 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{3ZPYPPWOJWPPLMCF2OM3WG7V32}

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	2026-05-18T00:06:59.049934Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

de5f87bece4d9ef5b045d399bb1bf5de8ce50708c9329f9bc4a1e0224bbdaddb

Aliases

arxiv: 1807.07195 · arxiv_version: 1807.07195v1 · doi: 10.48550/arxiv.1807.07195 · pith_short_12: 3ZPYPPWOJWPP · pith_short_16: 3ZPYPPWOJWPPLMCF · pith_short_8: 3ZPYPPWO

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/3ZPYPPWOJWPPLMCF2OM3WG7V32 \
  | 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: de5f87bece4d9ef5b045d399bb1bf5de8ce50708c9329f9bc4a1e0224bbdaddb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b9ca23064e8a1613631610dab3102ca2b5032ae4a0a4cbe54dfd7ad483338dc1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-19T00:32:47Z",
    "title_canon_sha256": "954b8edfdc227c51d850ea8b5773247e7d7519a75f979e3ca474ff08991695f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.07195",
    "kind": "arxiv",
    "version": 1
  }
}