Pith Number

pith:RAHHZEU3

pith:2002:RAHHZEU35KMBU2TVTJXCWSFLVG

not attested not anchored not stored refs pending

X-ray Spectroscopy and Variability of AGN Detected in the 2 Ms Chandra Deep Field-North Survey

A.E. Hornschemeier, C. Vignali, D.M. Alexander, D.P. Schneider (Pennsylvania State University), F.E. Bauer, G.P. Garmire, L.K. Townsley, P.S. Broos, W.N. Brandt

arxiv:astro-ph/0212389 v1 · 2002-12-17 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RAHHZEU35KMBU2TVTJXCWSFLVG}

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	2026-05-17T23:49:34.304696Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

880e7c929bea981a6a759a6e2b48aba99640d68134fbb233bfa462ff54dcad5f

Aliases

arxiv: astro-ph/0212389 · arxiv_version: astro-ph/0212389v1 · doi: 10.48550/arxiv.astro-ph/0212389 · pith_short_12: RAHHZEU35KMB · pith_short_16: RAHHZEU35KMBU2TV · pith_short_8: RAHHZEU3

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/RAHHZEU35KMBU2TVTJXCWSFLVG \
  | 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: 880e7c929bea981a6a759a6e2b48aba99640d68134fbb233bfa462ff54dcad5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6d570ffb6852e365e498b2fda7890097f5a530e36165565891e56c249f915343",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2002-12-17T23:15:26Z",
    "title_canon_sha256": "b14628557970069e41114730fe8bf04f938535f0fc649716872e006e900c1ad0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0212389",
    "kind": "arxiv",
    "version": 1
  }
}