Pith Number

pith:MWFDDGAK

pith:2011:MWFDDGAK4623JCBZVFOMKFSYGI

not attested not anchored not stored refs pending

A Combined Optical and X-ray Study of Unobscured Type 1 AGN. I. Optical Spectra and SED Modeling

C. Done, C. Jin, J. M. Gelbord, M. Ward

arxiv:1109.2069 v2 · 2011-09-09 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{MWFDDGAK4623JCBZVFOMKFSYGI}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T02:00:37.054389Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

658a31980ae7b5b48839a95cc516583235cce9753dee56b7b5f8668ed986510c

Aliases

arxiv: 1109.2069 · arxiv_version: 1109.2069v2 · doi: 10.48550/arxiv.1109.2069 · pith_short_12: MWFDDGAK4623 · pith_short_16: MWFDDGAK4623JCBZ · pith_short_8: MWFDDGAK

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/MWFDDGAK4623JCBZVFOMKFSYGI \
  | 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: 658a31980ae7b5b48839a95cc516583235cce9753dee56b7b5f8668ed986510c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c60559a6180e386a4edc783e23c750eba8dcd486e65c65ed15ae1c1770a5817",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-09-09T17:15:28Z",
    "title_canon_sha256": "70e93b15f1370c5f39007a3dc0e48e8099ec8a37b172f8e2531d40683caea29e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2069",
    "kind": "arxiv",
    "version": 2
  }
}