Pith Number

pith:YFNLXFGD

pith:2011:YFNLXFGDK7C2GT7KQVCMXPXX3H

not attested not anchored not stored refs pending

An XMM-Newton spectral survey of 12 micron selected galaxies. II. Implications for AGN selection and unification

Kirpal Nandra, Murray Brightman

arxiv:1103.2181 v1 · 2011-03-11 · 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{YFNLXFGDK7C2GT7KQVCMXPXX3H}

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	2026-05-18T02:02:54.785145Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c15abb94c357c5a34fea8544cbbef7d9f2221554c58dafd83c39a86529069f5e

Aliases

arxiv: 1103.2181 · arxiv_version: 1103.2181v1 · doi: 10.48550/arxiv.1103.2181 · pith_short_12: YFNLXFGDK7C2 · pith_short_16: YFNLXFGDK7C2GT7K · pith_short_8: YFNLXFGD

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/YFNLXFGDK7C2GT7KQVCMXPXX3H \
  | 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: c15abb94c357c5a34fea8544cbbef7d9f2221554c58dafd83c39a86529069f5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a8893ff17bf0cadd7eeb4f23da4f3fdd75b01f601cd3a400698c65b80935b91f",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2011-03-11T01:46:14Z",
    "title_canon_sha256": "3e4722d57381151e719242ebae61c887112bdcdd46ed5c0419d6fe0d5f7ff4f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1103.2181",
    "kind": "arxiv",
    "version": 1
  }
}