Pith Number

pith:SHXZ4XRT

pith:2011:SHXZ4XRTGB6NIRJL6PVBXY4TGW

not attested not anchored not stored refs pending

Faint high-redshift AGN in the Chandra Deep Field South: the evolution of the AGN luminosity function and black hole demography

A. Fontana, A. Grazian, A. Lamastra, A.M. Koekemoer, C. Feruglio, C. Malacaria, E. Piconcelli, F. Fiore, F. Shankar, K. Boutsia, M. Castellano, M. Pannella, N. Menci, N. Miller, P. Santini, S. Mathur, S. Puccetti

arxiv:1109.2888 v1 · 2011-09-13 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SHXZ4XRTGB6NIRJL6PVBXY4TGW}

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	2026-05-18T02:00:33.440451Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91ef9e5e33307cd4452bf3ea1be39335ae12bbfdfe12605ba5d82445fc4ea892

Aliases

arxiv: 1109.2888 · arxiv_version: 1109.2888v1 · doi: 10.48550/arxiv.1109.2888 · pith_short_12: SHXZ4XRTGB6N · pith_short_16: SHXZ4XRTGB6NIRJL · pith_short_8: SHXZ4XRT

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/SHXZ4XRTGB6NIRJL6PVBXY4TGW \
  | 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: 91ef9e5e33307cd4452bf3ea1be39335ae12bbfdfe12605ba5d82445fc4ea892

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "79691b1eacb7df7dc7e19786704710351e13f2738a03088a3e23939efa01cc86",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-09-13T19:26:57Z",
    "title_canon_sha256": "83177addc63c4cd3232b39341772a0f86167fb5c7f32a13f3b877d5df1cd82dc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1109.2888",
    "kind": "arxiv",
    "version": 1
  }
}