Pith Number

pith:OJVEXTYW

pith:2012:OJVEXTYWDMA7W56NK3BP2X5H3G

not attested not anchored not stored refs pending

A Quasar Catalog with Simultaneous UV, Optical and X-ray Observations by Swift

Blair L. Porterfield, Caryl Gronwall, Daniel Vanden Berk, Dirk Grupe, Donald P. Schneider, Jian Wu, Jonathan Gelbord, Sarah Wesolowski, Scott Koch

arxiv:1203.6071 v2 · 2012-03-27 · 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{OJVEXTYWDMA7W56NK3BP2X5H3G}

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	2026-05-18T01:58:01.290176Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

726a4bcf161b01fb77cd56c2fd5fa7d9a22eba1131897b378267df41beab16bf

Aliases

arxiv: 1203.6071 · arxiv_version: 1203.6071v2 · doi: 10.48550/arxiv.1203.6071 · pith_short_12: OJVEXTYWDMA7 · pith_short_16: OJVEXTYWDMA7W56N · pith_short_8: OJVEXTYW

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/OJVEXTYWDMA7W56NK3BP2X5H3G \
  | 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: 726a4bcf161b01fb77cd56c2fd5fa7d9a22eba1131897b378267df41beab16bf

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0c6e9acbcc716be9f0372aa39c2dd18d372204f4e9581d925e2344ad555c085d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2012-03-27T20:01:42Z",
    "title_canon_sha256": "000b0d2118a77c635772a11730ed9a93c0433c14450c513f692c636a704b3f77"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.6071",
    "kind": "arxiv",
    "version": 2
  }
}