Pith Number

pith:AX7WO2EX

pith:2013:AX7WO2EXSR63A2SPSISL7XF3BL

not attested not anchored not stored refs pending

Flux and color variations of the doubly imaged quasar UM673

A. Elyiv, A. Hornstrup, C. C. Th\"one, C. Liebig, C. Snodgrass, D. Ricci, E. Kerins, F. Finet, F. Grundahl, F. Sch\"onebeck, F. Zimmer, G. Maier, G. Masi, G. Scarpetta, J. Skottfelt, J. Southworth, J. Surdej, J. Wambsganss, K. Alsubai, K. Harps{\o}e, K. Sahu, L. Mancini, M. Burgdorf, M. Dominik, M. Glitrup, M. Hundertmark, M. Mathiasen, M. Penny, M. Zub, N. Kains, O. Wertz, P. Browne, P. Dodds, R. Schmidt, S. Calchi Novati, S. Dreizler, S. Hardis, S. Proft, S. Rahvar, S. Sch\"afer, T. Anguita, T. C. Hinse, T. Gerner, U. G. J{\o}rgensen, V. Bozza

arxiv:1302.0766 v2 · 2013-02-04 · 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{AX7WO2EXSR63A2SPSISL7XF3BL}

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	2026-05-18T03:26:32.038978Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

05ff676897947db06a4f9224bfdcbb0ac52dcc12fbd480ca42d3bf9c6929fc81

Aliases

arxiv: 1302.0766 · arxiv_version: 1302.0766v2 · doi: 10.48550/arxiv.1302.0766 · pith_short_12: AX7WO2EXSR63 · pith_short_16: AX7WO2EXSR63A2SP · pith_short_8: AX7WO2EX

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/AX7WO2EXSR63A2SPSISL7XF3BL \
  | 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: 05ff676897947db06a4f9224bfdcbb0ac52dcc12fbd480ca42d3bf9c6929fc81

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f729d387f383054b9b8068b225b097c36260204e42055b1a1ac529e74a4d695a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2013-02-04T17:35:49Z",
    "title_canon_sha256": "cd0f4e752cadcdb81969250d02047287af7c0f77f9108b2056786315c6ee1ec4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.0766",
    "kind": "arxiv",
    "version": 2
  }
}