Pith Number

pith:7353DFAQ

pith:2013:7353DFAQDP7R6ARUP6XWKJU3IY

not attested not anchored not stored refs pending

Discovery of a Large Population of Ultraluminous X-ray Sources in the Bulge-less Galaxies NGC 337 and ESO 501-23

Catherine J. Grier, Garrett Somers, Laura Ferrarese, Linda Watson, Paul Martini, Smita Mathur

arxiv:1304.0447 v1 · 2013-04-01 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7353DFAQDP7R6ARUP6XWKJU3IY}

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	2026-05-18T01:50:50.387191Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fefbb194101bff1f02347faf65269b462f73a435213bbd60f4e60b674e9009c4

Aliases

arxiv: 1304.0447 · arxiv_version: 1304.0447v1 · doi: 10.48550/arxiv.1304.0447 · pith_short_12: 7353DFAQDP7R · pith_short_16: 7353DFAQDP7R6ARU · pith_short_8: 7353DFAQ

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/7353DFAQDP7R6ARUP6XWKJU3IY \
  | 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: fefbb194101bff1f02347faf65269b462f73a435213bbd60f4e60b674e9009c4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49bc667c1dea2b9090c44b8eb589e659d91a431cc3086049349566e7c87d4f80",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-04-01T20:00:00Z",
    "title_canon_sha256": "5eea2cb83f5c25f50b34104ec56a2292214eec0baf70d940ec64e47c268cd46c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.0447",
    "kind": "arxiv",
    "version": 1
  }
}