Pith Number

pith:SFSQ3U6C

pith:2019:SFSQ3U6CCS4RPXLJII3ZMH7BC6

not attested not anchored not stored refs pending

The QUEST-La Silla AGN Variability Survey: selection of AGN candidates through optical variability

C. Yovaniniz, F. E. Bauer, L. C. Ho, N. Miranda, P. Ar\'Evalo, P. Coppi, P. Lira, P. S\'anchez-S\'aez, R. Cartier

arxiv:1904.04844 v1 · 2019-04-09 · astro-ph.GA · 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{SFSQ3U6CCS4RPXLJII3ZMH7BC6}

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	2026-05-17T23:44:54.476559Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

91650dd3c214b917dd694237961fe117b64b4b684f3b5eeb1cfc953bbbdc56eb

Aliases

arxiv: 1904.04844 · arxiv_version: 1904.04844v1 · doi: 10.48550/arxiv.1904.04844 · pith_short_12: SFSQ3U6CCS4R · pith_short_16: SFSQ3U6CCS4RPXLJ · pith_short_8: SFSQ3U6C

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/SFSQ3U6CCS4RPXLJII3ZMH7BC6 \
  | 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: 91650dd3c214b917dd694237961fe117b64b4b684f3b5eeb1cfc953bbbdc56eb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c747a9f70486ea9868c44b648816f287a1edf53e8b4b9411130b412ec6056941",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-04-09T18:00:07Z",
    "title_canon_sha256": "bad80f1e87fac6efe7e7a4d7d354c95c04eb7e4ed39b2ac7e67f379191bab110"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.04844",
    "kind": "arxiv",
    "version": 1
  }
}