Pith Number

pith:QMXPDAG5

pith:2018:QMXPDAG5QH26HFXL4HQ22FGGZ4

not attested not anchored not stored refs pending

The first sample of spectroscopically confirmed ultra-compact massive galaxies in the Kilo Degree Survey

A. Grado, C. Blake, C. E. Petrillo, C. Lidman, C. Spiniello, C. Tortora, C. Wolf, D. Scognamiglio, F. Getman, F. La Barbera, G. Covone, G. D'Ago, G. Longo, G. Verdoes Kleijn, I. Trujillo, K. Glazebrook, K. H. Kuijken, L. V. E. Koopmans, M. A. Raj, M. Brescia, M. Capaccioli, M. Radovich, M. Spavone, N. R. Napolitano, N. Roy, S. Cavuoti, S. Joudaki, V. Pota

arxiv:1806.01307 v2 · 2018-06-04 · 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{QMXPDAG5QH26HFXL4HQ22FGGZ4}

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	2026-05-18T00:04:56.194411Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

832ef180dd81f5e396ebe1e1ad14c6cf172e6b72ee7b6acebe07bc2492098a63

Aliases

arxiv: 1806.01307 · arxiv_version: 1806.01307v2 · doi: 10.48550/arxiv.1806.01307 · pith_short_12: QMXPDAG5QH26 · pith_short_16: QMXPDAG5QH26HFXL · pith_short_8: QMXPDAG5

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/QMXPDAG5QH26HFXL4HQ22FGGZ4 \
  | 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: 832ef180dd81f5e396ebe1e1ad14c6cf172e6b72ee7b6acebe07bc2492098a63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e43193d4b15d3dc06072fc8ca67c60db94f806efb0519723778ead5163940b9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-06-04T18:13:23Z",
    "title_canon_sha256": "703a671359668a13d2f267c2c0ff7b9a723caf05235a3fd3b4d21e16701e532f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1806.01307",
    "kind": "arxiv",
    "version": 2
  }
}