Pith Number

pith:PIXRTVL6

pith:2018:PIXRTVL6WCPGL6U7JU4LWIW7LY

not attested not anchored not stored refs pending

An intrinsic link between long-term UV/optical variations and X-ray loudness in quasars

Fei-Fan Zhu (USTC), Feng Yuan (SHAO), Heng-Xiao Guo (UIUC), Jun-Xian Wang (USTC), Wei-Min Gu (XMU), Wen-yong Kang (USTC), Xin-Wu Cao (SHAO), Zhen-Yi Cai (USTC)

arxiv:1810.03776 v2 · 2018-10-09 · 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{PIXRTVL6WCPGL6U7JU4LWIW7LY}

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	2026-05-17T23:59:49.230874Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7a2f19d57eb09e65fa9f4d38bb22df5e3052ac631d55dca62220222e359aba17

Aliases

arxiv: 1810.03776 · arxiv_version: 1810.03776v2 · doi: 10.48550/arxiv.1810.03776 · pith_short_12: PIXRTVL6WCPG · pith_short_16: PIXRTVL6WCPGL6U7 · pith_short_8: PIXRTVL6

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/PIXRTVL6WCPGL6U7JU4LWIW7LY \
  | 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: 7a2f19d57eb09e65fa9f4d38bb22df5e3052ac631d55dca62220222e359aba17

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc0d1a98255b2ec64dc87f89ab57642c25f869139ca3dbdc3d0451a068c21f67",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2018-10-09T02:21:56Z",
    "title_canon_sha256": "e1c97ebcf3a428b9f55c5d1f461d5a7080066f54516ea125692b809a0f6c368b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1810.03776",
    "kind": "arxiv",
    "version": 2
  }
}