Pith Number

pith:BL32SBK5

pith:2021:BL32SBK5XUDMNEMPNDEKTITZMX

not attested not anchored not stored refs pending

Gaia GraL: Gaia DR2 Gravitational Lens Systems. VII. XMM-Newton Observations of Lensed Quasars

Alberto Krone-Martins, Anna Nierenberg, Ashish A. Mahabal, Carolina Sp\'indola-Duarte, Christine Ducourant, Daniel Stern, Dominic J. Walton, Dominique Sluse, Dougal Dobie, Eric Slezak, Jakob Sebastian den Brok, Jean-Fran\c{c}ois Le Campion, Jean Surdej, Joachim Wambsganss, Jonas Kl\"uter, Laurent Galluccio, Ludovic Delchambre, Matthew J. Graham, Priyanka Jalan, Quentin Petit, Ramachrisna Teixeira, Sergei A. Klioner, Sergio Scarano Jr, S. G. Djorgovski, Thomas Connor, Vibhore Negi

arxiv:2109.14103 v1 · 2021-09-28 · astro-ph.GA · astro-ph.HE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BL32SBK5XUDMNEMPNDEKTITZMX}

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	2026-07-05T04:03:52.734408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0af7a9055dbd06c6918f68c8a9a27965db8a423ef1384e2df321dedd9c0bb388

Aliases

arxiv: 2109.14103 · arxiv_version: 2109.14103v1 · doi: 10.48550/arxiv.2109.14103 · pith_short_12: BL32SBK5XUDM · pith_short_16: BL32SBK5XUDMNEMP · pith_short_8: BL32SBK5

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/BL32SBK5XUDMNEMPNDEKTITZMX \
  | 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: 0af7a9055dbd06c6918f68c8a9a27965db8a423ef1384e2df321dedd9c0bb388

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4e0e5c74da98ff94690f8e8d3779f8142d96255f1f4de6a0ac7bf8772f4fef2",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-09-28T23:47:32Z",
    "title_canon_sha256": "8293632ff3b3f11fedc31d058330b75718dacd619915f7e59e591c927760006c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.14103",
    "kind": "arxiv",
    "version": 1
  }
}