Pith Number

pith:PTL7O3Y2

pith:2015:PTL7O3Y2JXBZHNGHM3POGD5ETQ

not attested not anchored not stored refs pending

The detection of ultra-faint low surface brightness dwarf galaxies in the Virgo Cluster: a Probe of Dark Matter and Baryonic Physics

A. Fontana, A. Grazian, D. Paris, E. Giallongo, L. Pentericci, N. Menci, R. Fassbender

arxiv:1509.07402 v1 · 2015-09-24 · 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{PTL7O3Y2JXBZHNGHM3POGD5ETQ}

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	2026-05-18T01:27:57.064001Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cd7f76f1a4dc393b4c766dee30fa49c36595b276305cddc67859ec29ac82b4f

Aliases

arxiv: 1509.07402 · arxiv_version: 1509.07402v1 · doi: 10.48550/arxiv.1509.07402 · pith_short_12: PTL7O3Y2JXBZ · pith_short_16: PTL7O3Y2JXBZHNGH · pith_short_8: PTL7O3Y2

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/PTL7O3Y2JXBZHNGHM3POGD5ETQ \
  | 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: 7cd7f76f1a4dc393b4c766dee30fa49c36595b276305cddc67859ec29ac82b4f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b514a8cf4879ce7f0dd79d7620b6b5ad5ce9fccf3501b61ba387402f66cfe77b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-09-24T15:13:38Z",
    "title_canon_sha256": "7018b2741110a60c21d57485f6157d7211748b567c037b3187e772799537cd14"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.07402",
    "kind": "arxiv",
    "version": 1
  }
}