Pith Number

pith:2WIEFG7J

pith:2018:2WIEFG7JI7BMEKTY6L47XOEGHJ

not attested not anchored not stored refs pending

A highly magnified gravitationally lensed red quasar at z = 2.5 with significant flux anomaly: Uncovering a missing population

C. E. Rusu, D. Stern, E. Glikman, J. M. O'Meara, M. J. Graham, M. Lacy, S. G. Djorgovski, T. Urrutia

arxiv:1807.05434 v1 · 2018-07-14 · 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{2WIEFG7JI7BMEKTY6L47XOEGHJ}

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	2026-05-18T00:10:43.533170Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d590429be947c2c22a78f2f9fbb8863a5ad8f8b2b18037bd0a88bf235edfb82d

Aliases

arxiv: 1807.05434 · arxiv_version: 1807.05434v1 · doi: 10.48550/arxiv.1807.05434 · pith_short_12: 2WIEFG7JI7BM · pith_short_16: 2WIEFG7JI7BMEKTY · pith_short_8: 2WIEFG7J

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/2WIEFG7JI7BMEKTY6L47XOEGHJ \
  | 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: d590429be947c2c22a78f2f9fbb8863a5ad8f8b2b18037bd0a88bf235edfb82d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "adb204a7e5f98dd6f25291b1bbd8ba0bdcf700eed56af9067ccc9d8ba1c1b026",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-14T19:34:35Z",
    "title_canon_sha256": "92ed4a035d2447367c4d0da1e17bdefe66ab77cc8df02af0b62cf6b08a70ae45"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.05434",
    "kind": "arxiv",
    "version": 1
  }
}