Pith Number

pith:PPQUOGJT

pith:2016:PPQUOGJTZWAZUMJ4VU45TT5RS3

not attested not anchored not stored refs pending

Anatomy of the AGN in NGC 5548 VIII. XMM-Newton's EPIC detailed view of an unexpected variable multilayer absorber

B. De Marco, B.M. Peterson, D.J. Walton, E. Behar, E. Costantini, F.A. Harrison, F. Ursini, G.A. Kriss, G. Branduardi-Raymont, G. Matt, G. Ponti, J. Ebrero, J.S. Kaastra, K.C. Steenbrugge, L. Di Gesu, M. Cappi, M. Mehdipour, M. Whewell, N. Arav, P.-O. Petrucci, R. Boissay, S. Bianchi, S. Kaspi, S. Paltani

arxiv:1604.01777 v1 · 2016-04-06 · 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{PPQUOGJTZWAZUMJ4VU45TT5RS3}

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	2026-05-18T01:11:12.225958Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7be1471933cd819a313cad39d9cfb196f1f324f918ef7b8ace29d3c0a1ce9401

Aliases

arxiv: 1604.01777 · arxiv_version: 1604.01777v1 · doi: 10.48550/arxiv.1604.01777 · pith_short_12: PPQUOGJTZWAZ · pith_short_16: PPQUOGJTZWAZUMJ4 · pith_short_8: PPQUOGJT

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/PPQUOGJTZWAZUMJ4VU45TT5RS3 \
  | 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: 7be1471933cd819a313cad39d9cfb196f1f324f918ef7b8ace29d3c0a1ce9401

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1330cc8a257f67d521caf317a639d60c3ffd9e8715a197580a315a2b74ce38a7",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2016-04-06T20:00:06Z",
    "title_canon_sha256": "2d7d81defaa1aa4f788876093b7c25ce176cfea25d916c973ac882e1abcb3cbf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.01777",
    "kind": "arxiv",
    "version": 1
  }
}