Pith Number

pith:D3Y7DCOB

pith:2011:D3Y7DCOB2HGNDUUTIDYCOBXO34

not attested not anchored not stored refs pending

XMM-Newton Observations of NGC 247: X-ray Population and a Supersoft Ultraluminous X-ray Source

Hua Feng, Jing Jin, Philip Kaaret, Shuang-Nan Zhang

arxiv:1101.3363 v2 · 2011-01-18 · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D3Y7DCOB2HGNDUUTIDYCOBXO34}

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.

Cited by

1 paper in Pith

Little Red Dots as Supermassive Analogs of SS 433

Receipt and verification

First computed	2026-05-18T02:03:26.999480Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0

Aliases

arxiv: 1101.3363 · arxiv_version: 1101.3363v2 · doi: 10.48550/arxiv.1101.3363 · pith_short_12: D3Y7DCOB2HGN · pith_short_16: D3Y7DCOB2HGNDUUT · pith_short_8: D3Y7DCOB

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/D3Y7DCOB2HGNDUUTIDYCOBXO34 \
  | 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: 1ef1f189c1d1ccd1d29340f02706eedf36714dab913e34b3e6da773af8a1dfd0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bd871c9d837f5db2e2aaee18919679d72d8b0817ab524672b396f0f990ce2dff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-01-18T01:35:52Z",
    "title_canon_sha256": "5f3c0329907b8874ef599cbd50203ed078a6988c9fd065e3b7cc8d365479031c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.3363",
    "kind": "arxiv",
    "version": 2
  }
}