Pith Number

pith:WNWM4SWR

pith:2017:WNWM4SWRMY6O5IYGJ7YDBDJOV4

not attested not anchored not stored refs pending

Galaxy evolution in groups. NGC 3447/NGC 3447A: the odd couple in LGG 225

(2) Laborat\'orio de Astrof\'isica Te\'orica e Observational, (3) Instituto de Astronom\'ia, (4) Universidad Iberoamericana, Antonietta Marino (1), Department of Physics, Henri Plana (2), Lorena Arias (4) ((1) INAF Padova Observatory, Margarita Rosado (3), M\'exico City), Paola Mazzei (1), Roberto Rampazzo (1), UNAM, Universidade Estadual de Santa Cruz

arxiv:1710.07474 v1 · 2017-10-20 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WNWM4SWRMY6O5IYGJ7YDBDJOV4}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:23:32.345619Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b36cce4ad1663ceea3064ff0308d2eaf35592d84ef7410fd4b019a555d932091

Aliases

arxiv: 1710.07474 · arxiv_version: 1710.07474v1 · doi: 10.48550/arxiv.1710.07474 · pith_short_12: WNWM4SWRMY6O · pith_short_16: WNWM4SWRMY6O5IYG · pith_short_8: WNWM4SWR

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/WNWM4SWRMY6O5IYGJ7YDBDJOV4 \
  | 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: b36cce4ad1663ceea3064ff0308d2eaf35592d84ef7410fd4b019a555d932091

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b112d8790e9d1392059050e84ce2a506847ba32cf099cbfcc9d3971113b67c7f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-10-20T10:30:23Z",
    "title_canon_sha256": "f256a578ed2795db414a5e11bf42478693b70b557fd9a403775fa8cd836f0eae"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.07474",
    "kind": "arxiv",
    "version": 1
  }
}