Pith Number

pith:QFGJ6MZD

pith:2018:QFGJ6MZD2OMYHF5J32FDJKHSZF

not attested not anchored not stored refs pending

Bright lenses are easy to find: Spectroscopic confirmation of lensed quasars in the Southern Sky

A. Agnello, A. V. Sergeyev, C. Spiniello, C. Tortora, N. R. Napolitano, \'O. Rodr\'iguez, T. Anguita

arxiv:1811.01053 v2 · 2018-11-02 · 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{QFGJ6MZD2OMYHF5J32FDJKHSZF}

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	2026-05-17T23:57:37.756831Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814c9f3323d3998397a9de8a34a8f2c95921e1181d69f88954261556335a8676

Aliases

arxiv: 1811.01053 · arxiv_version: 1811.01053v2 · doi: 10.48550/arxiv.1811.01053 · pith_short_12: QFGJ6MZD2OMY · pith_short_16: QFGJ6MZD2OMYHF5J · pith_short_8: QFGJ6MZD

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/QFGJ6MZD2OMYHF5J32FDJKHSZF \
  | 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: 814c9f3323d3998397a9de8a34a8f2c95921e1181d69f88954261556335a8676

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee24df1125b57c03209ce428b80d8aba9ab5067d7a1d4fc1954b3d76f26337b4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-11-02T19:00:20Z",
    "title_canon_sha256": "7ed3b0e359e25b6b9d489764f2f040a7ac57474ea94d99d39c471a83efc93210"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1811.01053",
    "kind": "arxiv",
    "version": 2
  }
}