Pith Number

pith:WCBNJSBA

pith:2018:WCBNJSBAL4YKD24CVF4HXMQ4TF

not attested not anchored not stored refs pending

Evolution of quasar stochastic variability along its main sequence

Hengxiao Guo (UIUC), Junxian Wang (USTC), Mouyuan Sun (USTC), Yongquan Xue (USTC), Zhenyi Cai (USTC)

arxiv:1809.05655 v1 · 2018-09-15 · astro-ph.HE · 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{WCBNJSBAL4YKD24CVF4HXMQ4TF}

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	2026-05-18T00:02:30.759806Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b082d4c8205f30a1eb82a9787bb21c995536f6b9c6b956a20b78c9e29335f5a5

Aliases

arxiv: 1809.05655 · arxiv_version: 1809.05655v1 · doi: 10.48550/arxiv.1809.05655 · pith_short_12: WCBNJSBAL4YK · pith_short_16: WCBNJSBAL4YKD24C · pith_short_8: WCBNJSBA

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/WCBNJSBAL4YKD24CVF4HXMQ4TF \
  | 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: b082d4c8205f30a1eb82a9787bb21c995536f6b9c6b956a20b78c9e29335f5a5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b657b70f595dd72adc4202ec04cd784f804482efc0f71594928b9b18ff7619f8",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-09-15T06:10:17Z",
    "title_canon_sha256": "2ea007eec005f4471ec51e7cdd5aee1fc3cda5c243c310048396748a373acfd9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.05655",
    "kind": "arxiv",
    "version": 1
  }
}