Pith Number

pith:4YQD5GUA

pith:2003:4YQD5GUATKGYOZXAHYV2E6F5KN

not attested not anchored not stored refs pending

The X-ray Background and AGNs

G. Hasinger

arxiv:astro-ph/0310804 v1 · 2003-10-28 · 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{4YQD5GUATKGYOZXAHYV2E6F5KN}

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	2026-07-04T16:37:37.840525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e6203e9a809a8d8766e03e2ba278bd534854445bf23d3c2b2a230e97f661a31e

Aliases

arxiv: astro-ph/0310804 · arxiv_version: astro-ph/0310804v1 · doi: 10.48550/arxiv.astro-ph/0310804 · pith_short_12: 4YQD5GUATKGY · pith_short_16: 4YQD5GUATKGYOZXA · pith_short_8: 4YQD5GUA

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/4YQD5GUATKGYOZXAHYV2E6F5KN \
  | 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: e6203e9a809a8d8766e03e2ba278bd534854445bf23d3c2b2a230e97f661a31e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f90555a8d76e2c713ff3ff2dda463c6075a42823d104578580b9ab1a5df5c2d",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2003-10-28T19:08:04Z",
    "title_canon_sha256": "45b2856a48681271e22c8daf3eddc00ee3db2605086427a226bff8c78dcfbe52"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0310804",
    "kind": "arxiv",
    "version": 1
  }
}