Pith Number

pith:CDIBG6ZX

pith:2009:CDIBG6ZXDDEC33WQWLC2NZW62P

not attested not anchored not stored refs pending

Spectroscopic follow-up of variability-selected active galactic nuclei in the Chandra Deep Field South

B. Leibundgut, D. Trevese, F. Vagnetti, K. Boutsia

arxiv:0902.0933 v1 · 2009-02-05 · astro-ph.GA · 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{CDIBG6ZXDDEC33WQWLC2NZW62P}

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	2026-07-04T17:14:21.503591Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

10d0137b3718c82deed0b2c5a6e6ded3ff064149db8661c276abcb22cca9348e

Aliases

arxiv: 0902.0933 · arxiv_version: 0902.0933v1 · doi: 10.48550/arxiv.0902.0933 · pith_short_12: CDIBG6ZXDDEC · pith_short_16: CDIBG6ZXDDEC33WQ · pith_short_8: CDIBG6ZX

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/CDIBG6ZXDDEC33WQWLC2NZW62P \
  | 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: 10d0137b3718c82deed0b2c5a6e6ded3ff064149db8661c276abcb22cca9348e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "faf793bed14f5d83eae835aa3a7c7756458e060eef9fe89c069278d26c1b8355",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2009-02-05T16:14:46Z",
    "title_canon_sha256": "5855ea0c3a7cd35b518c07f240447476082c97e60a342ac9f3936b5237fe60a4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0902.0933",
    "kind": "arxiv",
    "version": 1
  }
}