Pith Number

pith:ELDU6U4M

pith:2026:ELDU6U4MFNN5IZKDM2UFAF3AAH

not attested not anchored not stored refs pending

Search for quasar pairs with Gaia astrometric data IV. Confirmation of 17 dual quasars and 143 projected quasars

Jianghua Wu, Liang Jing, Qihang Chen, Xingyu Zhu, Zhuojun Deng

arxiv:2603.03042 v2 · 2026-03-03 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ELDU6U4MFNN5IZKDM2UFAF3AAH}

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	2026-07-20T00:18:19.132813Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

22c74f538c2b5bd4654366a850176001c1fb05d3aa6f1f1d05b277e0553f4fd5

Aliases

arxiv: 2603.03042 · arxiv_version: 2603.03042v2 · doi: 10.48550/arxiv.2603.03042 · pith_short_12: ELDU6U4MFNN5 · pith_short_16: ELDU6U4MFNN5IZKD · pith_short_8: ELDU6U4M

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/ELDU6U4MFNN5IZKDM2UFAF3AAH \
  | 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: 22c74f538c2b5bd4654366a850176001c1fb05d3aa6f1f1d05b277e0553f4fd5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab8d20ecc3ebdd3b6af6c08008d458fa24ee8fb26e5858ea782fe31514a13009",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2026-03-03T14:36:14Z",
    "title_canon_sha256": "f9de9e6db2c4c2f36f2821ef15be861ab1a602b8e3a4b33420e37191964e218f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2603.03042",
    "kind": "arxiv",
    "version": 2
  }
}