Pith Number

pith:56M5QDAJ

pith:2013:56M5QDAJSMB5ER3F3E7BFD2APY

not attested not anchored not stored refs pending

The XMM Deep survey in the CDFS V. Iron K lines from active galactic nuclei in the distant Universe

(2) Institute of Astronomy, 3, 3), 3) ((1) Instituto de F\'isica de Cantabria (CSIC-UC) Santander Spain, (3) INAF-Osservatorio Astronomico di Bologna Italy, (4) Dipartimento di Fisica ed Astronomia Universit\`a di Bologna Italy, (5) ICREA, (6) Department of Physics University of Durham UK, 7), (7) Max Planck Institute f\"ur Extraterrestriche Physik Garching Germany), A. Comastri (3), A. Corral (2), Astrophysics National Observatory of Athens Greece, C. Vignali (4, E. Rovilos (6), F. J. Carrera (1), F. Vito (4, I. Georgantopoulos (2, Institut de Ci\`encies del Cosmos (ICC) Universitat de Barcelona Spain, K. Iwasawa (5), M. Brusa (4, N. Cappelluti (3), P. Ranalli (2, R. Gilli (3), S. Falocco (1), X. Barcons (1)

arxiv:1304.7690 v1 · 2013-04-29 · 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{56M5QDAJSMB5ER3F3E7BFD2APY}

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	2026-05-18T02:45:32.060184Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef99d80c099303d24765d93e128f407e3bd9e69ea7862371ccead44a76b9fbf6

Aliases

arxiv: 1304.7690 · arxiv_version: 1304.7690v1 · doi: 10.48550/arxiv.1304.7690 · pith_short_12: 56M5QDAJSMB5 · pith_short_16: 56M5QDAJSMB5ER3F · pith_short_8: 56M5QDAJ

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/56M5QDAJSMB5ER3F3E7BFD2APY \
  | 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: ef99d80c099303d24765d93e128f407e3bd9e69ea7862371ccead44a76b9fbf6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eda190f9c426483d5e71edfa28aefa2a8af326473207fc0eb2cc72039c92aec1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2013-04-29T15:43:35Z",
    "title_canon_sha256": "bdccb8dfd63596b7eadbb9fe9aa0f5400bc49a111d29338d11e28bd5013011e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1304.7690",
    "kind": "arxiv",
    "version": 1
  }
}