Pith Number

pith:4K3OSBBJ

pith:2011:4K3OSBBJQF2KYPTOLKLOTPZ72Z

not attested not anchored not stored refs pending

Fe K emission from active galaxies in the COSMOS field

A. Comastri, A. Koekemoer, A. Merloni, C. D. Impey, C. Vignali, D. B. Sanders, E. Lusso, G. Hasinger, G. Lanzuisi, J. R. Trump, K. Iwasawa, M. Brusa, M. Salvato, N. Cappelluti, R. Gilli, V. Mainieri, Y. Taniguchi

arxiv:1111.2447 v1 · 2011-11-10 · astro-ph.CO · 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{4K3OSBBJQF2KYPTOLKLOTPZ72Z}

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	2026-05-18T01:59:42.667150Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e2b6e904298174ac3e6e5a96e9bf3fd6558cb6cb450ffa398cbbf04b4b31d920

Aliases

arxiv: 1111.2447 · arxiv_version: 1111.2447v1 · doi: 10.48550/arxiv.1111.2447 · pith_short_12: 4K3OSBBJQF2K · pith_short_16: 4K3OSBBJQF2KYPTO · pith_short_8: 4K3OSBBJ

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/4K3OSBBJQF2KYPTOLKLOTPZ72Z \
  | 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: e2b6e904298174ac3e6e5a96e9bf3fd6558cb6cb450ffa398cbbf04b4b31d920

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1c9bd60d1b055451c71407664451a922ffbe96469637596a5b1efbf59711d7ee",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-10T11:02:26Z",
    "title_canon_sha256": "2b4552604aa679ce621798448e678d48aab223231691e593d1531e0dc5a67f86"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.2447",
    "kind": "arxiv",
    "version": 1
  }
}