Pith Number

pith:WEVR45DU

pith:2012:WEVR45DUVZZQRJ27ACDRFNFLVS

not attested not anchored not stored refs pending

A Combined Optical and X-ray Study of Unobscured Type 1 AGN. II. Relation Between X-ray Emission and Optical Spectra

C. Done, C. Jin, M. Ward

arxiv:1203.0239 v1 · 2012-03-01 · astro-ph.HE · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WEVR45DUVZZQRJ27ACDRFNFLVS}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:58:16.126220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b12b1e7474ae7308a75f008712b4abaca0b63b3ae944c76a86ebd85402fbeff4

Aliases

arxiv: 1203.0239 · arxiv_version: 1203.0239v1 · doi: 10.48550/arxiv.1203.0239 · pith_short_12: WEVR45DUVZZQ · pith_short_16: WEVR45DUVZZQRJ27 · pith_short_8: WEVR45DU

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/WEVR45DUVZZQRJ27ACDRFNFLVS \
  | 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: b12b1e7474ae7308a75f008712b4abaca0b63b3ae944c76a86ebd85402fbeff4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c56a04e64d5acebfacc6e5e8384c71ea43e4593039594fad4e6869f0fc161055",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2012-03-01T16:33:48Z",
    "title_canon_sha256": "cfac302f00f6a933ef1a35f957e30d4ba108bb5d9e17d917e6895cde739b97f3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.0239",
    "kind": "arxiv",
    "version": 1
  }
}