Pith Number

pith:64GPL5UV

pith:2011:64GPL5UVGAKWN5UDXZSA3WU476

not attested not anchored not stored refs pending

The Optical, Ultraviolet, and X-ray Structure of the Quasar HE 0435-1223

(2) University of Oklahoma, (3) College of Charleston), Bin Chen (2), Christopher S. Kochanek (1), George Chartas (3) ((1) Ohio State, Jeffrey A. Blackburne (1), Xinyu Dai (2)

arxiv:1112.0027 v2 · 2011-11-30 · 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{64GPL5UVGAKWN5UDXZSA3WU476}

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	2026-05-18T01:59:20.849433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f70cf5f695301566f683be640dda9cff932bc245f126a4e3034cbfd70379b767

Aliases

arxiv: 1112.0027 · arxiv_version: 1112.0027v2 · doi: 10.48550/arxiv.1112.0027 · pith_short_12: 64GPL5UVGAKW · pith_short_16: 64GPL5UVGAKWN5UD · pith_short_8: 64GPL5UV

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/64GPL5UVGAKWN5UDXZSA3WU476 \
  | 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: f70cf5f695301566f683be640dda9cff932bc245f126a4e3034cbfd70379b767

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bb402618e248581fb24956da0a9316ff427096fa9c3c9f4e3540d0ebdd767e32",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-11-30T21:08:32Z",
    "title_canon_sha256": "a0bad3c98e49224fcb7011305a080cff5d9192a3d65fe722b38eafbcb281aa78"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1112.0027",
    "kind": "arxiv",
    "version": 2
  }
}