Pith Number

pith:VVN27YHR

pith:2019:VVN27YHRCICJ3OHLE64K7XY6CF

not attested not anchored not stored refs pending

A hard look at NGC 5347: revealing a nearby Compton-thick AGN

A. M. Lohfink, A. Zoghbi, D. Barret, D. Proga, D. Stern, E. Behar, E. S. Kammoun, J. M. Miller, J. S. Kaastra, K. Oh, L. W. Brenneman, M. Koss, R. F. Mushotzky, W. N. Brandt

arxiv:1904.11028 v1 · 2019-04-24 · astro-ph.HE · 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{VVN27YHRCICJ3OHLE64K7XY6CF}

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	2026-05-17T23:44:11.183592Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ad5bafe0f112049db8eb27b8afdf1e115db427fbac5a678eb7b017dacd70604a

Aliases

arxiv: 1904.11028 · arxiv_version: 1904.11028v1 · doi: 10.48550/arxiv.1904.11028 · pith_short_12: VVN27YHRCICJ · pith_short_16: VVN27YHRCICJ3OHL · pith_short_8: VVN27YHR

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/VVN27YHRCICJ3OHLE64K7XY6CF \
  | 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: ad5bafe0f112049db8eb27b8afdf1e115db427fbac5a678eb7b017dacd70604a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "78a0f486679a832f301e37192b1c2e1014a4ad8cbace210e117409660f0f1274",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-04-24T19:17:43Z",
    "title_canon_sha256": "5123add172880eb10ac2228eada7df5844eee3b2bb857f91af6eaeed3c0d982c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.11028",
    "kind": "arxiv",
    "version": 1
  }
}