Pith Number

pith:AFO7SQ6V

pith:2018:AFO7SQ6VI4QSHVBSEVWXCHXVT6

not attested not anchored not stored refs pending

Revealing the nonlinear behaviour of the lensed quasar Q0957+561

A. Bewketu Belete, B. L. Canto Martins, I. C. Leao, J. R. De Medeiros

arxiv:1812.04635 v1 · 2018-12-11 · 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{AFO7SQ6VI4QSHVBSEVWXCHXVT6}

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	2026-05-17T23:55:10.651790Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

015df943d5472123d432256d711ef59f87a1a5f7fc9acceafcf470f51a22568d

Aliases

arxiv: 1812.04635 · arxiv_version: 1812.04635v1 · doi: 10.48550/arxiv.1812.04635 · pith_short_12: AFO7SQ6VI4QS · pith_short_16: AFO7SQ6VI4QSHVBS · pith_short_8: AFO7SQ6V

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/AFO7SQ6VI4QSHVBSEVWXCHXVT6 \
  | 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: 015df943d5472123d432256d711ef59f87a1a5f7fc9acceafcf470f51a22568d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "24437180a2bdec8ce4db8754554880bca36aee605a4c326813b7b63440e2587c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-12-11T19:00:08Z",
    "title_canon_sha256": "b6b60e5ce3801508820825197300b5bb25b3383e0090cc7b7c7512802e8d5646"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.04635",
    "kind": "arxiv",
    "version": 1
  }
}