Pith Number

pith:JGDLWUUL

pith:2011:JGDLWUUL3QQPV4I7YJKYGVYZ52

not attested not anchored not stored refs pending

A Refined QSO Selection Method Using Diagnostics Tests: 663 QSO Candidates in the LMC

Charles Alcock (CfA), Dae-Won Kim (CfA), Markos Trichas (CfA), Michael Rowan-Robinson (Imperial College), Pavlos Protopapas (CfA), Roni Khardon (Tufts Univ.), Yong-Ik Byun (Yonsei Univ.)

arxiv:1110.5632 v2 · 2011-10-25 · astro-ph.CO · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{JGDLWUUL3QQPV4I7YJKYGVYZ52}

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	2026-05-18T02:00:03.870436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4986bb528bdc20faf11fc255835719eeab7059487ab506df8ccc60f91e8f541b

Aliases

arxiv: 1110.5632 · arxiv_version: 1110.5632v2 · doi: 10.48550/arxiv.1110.5632 · pith_short_12: JGDLWUUL3QQP · pith_short_16: JGDLWUUL3QQPV4I7 · pith_short_8: JGDLWUUL

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/JGDLWUUL3QQPV4I7YJKYGVYZ52 \
  | 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: 4986bb528bdc20faf11fc255835719eeab7059487ab506df8ccc60f91e8f541b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cf6161b47fc893bc571dd5189dfaff5cff9a602ad2607ba54962972912e0bb7a",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-10-25T19:58:48Z",
    "title_canon_sha256": "6d6d7a9bfd78fd31ff28830b68d9c3354b63d130aa0b8f3e85afc059fdfc2544"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.5632",
    "kind": "arxiv",
    "version": 2
  }
}