Pith Number

pith:YDTAWGS4

pith:2015:YDTAWGS44VX34WOSO4GKSDXPS5

not attested not anchored not stored refs pending

The NGC 4013 tale: a pseudo-bulged, late-type spiral shaped by a major merger

Chinese Academy of Sciences (NAOC) (2) GEPI, Francois Hammer (2), Hector Flores (2) ((1) National Astronomical Observatories, Jianling Wang (1), Mathieu Puech (2), Observatoire de Paris), Yanbin Yang (2)

arxiv:1508.03178 v1 · 2015-08-13 · 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{YDTAWGS44VX34WOSO4GKSDXPS5}

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	2026-05-18T01:35:21.506760Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c0e60b1a5ce56fbe59d2770ca90eef975753f4debf6d7422915c6d19340ecca6

Aliases

arxiv: 1508.03178 · arxiv_version: 1508.03178v1 · doi: 10.48550/arxiv.1508.03178 · pith_short_12: YDTAWGS44VX3 · pith_short_16: YDTAWGS44VX34WOS · pith_short_8: YDTAWGS4

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/YDTAWGS44VX34WOSO4GKSDXPS5 \
  | 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: c0e60b1a5ce56fbe59d2770ca90eef975753f4debf6d7422915c6d19340ecca6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "7007e37b94ebea300673dbc5f3a6e5ee67f85999fb40ec2540879ff16e1ac4d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-08-13T11:39:23Z",
    "title_canon_sha256": "2796390b7f2b8f6ae6e49bb9cf2db236f366ca468ab5ebdbabef6a0c7bd2852c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1508.03178",
    "kind": "arxiv",
    "version": 1
  }
}