Pith Number

pith:GF3NSLAL

pith:2011:GF3NSLALPDTYA7CXTEBNQB66VH

not attested not anchored not stored refs pending

A Compton-thick AGN at z~5 in the 4 Ms Chandra Deep Field South

A. Comastri, A. Fontana, A. Ptak, B. Luo, C. Norman, C. Vignali, F. Fiore, J. Su, M. Castellano, M. Stiavelli, P. Rosati, P. Tozzi, R. Gilli, V. Mainieri, W.N. Brandt, Y.Q. Xue

arxiv:1102.4714 v1 · 2011-02-23 · 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{GF3NSLALPDTYA7CXTEBNQB66VH}

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	2026-05-18T02:03:06.076893Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3176d92c0b78e7807c579902d807dea9cf81e609e85a77a345f17f3556bb9a3f

Aliases

arxiv: 1102.4714 · arxiv_version: 1102.4714v1 · doi: 10.48550/arxiv.1102.4714 · pith_short_12: GF3NSLALPDTY · pith_short_16: GF3NSLALPDTYA7CX · pith_short_8: GF3NSLAL

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/GF3NSLALPDTYA7CXTEBNQB66VH \
  | 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: 3176d92c0b78e7807c579902d807dea9cf81e609e85a77a345f17f3556bb9a3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2d1265889a0c37e83614e64445734309ff7405a97300ef868fc7a9668d67b735",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-02-23T11:23:19Z",
    "title_canon_sha256": "6d98c6eafd035fb76fd16a0409cea47e56d649e59b04f77a6d5e00af5c85a5a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1102.4714",
    "kind": "arxiv",
    "version": 1
  }
}