Pith Number

pith:XC3XGCFV

pith:2020:XC3XGCFVSCNH3KTH5ZPSLBPTUE

not attested not anchored not stored refs pending

High-redshift Extreme Variability Quasars from Sloan Digital Sky Survey Multi-Epoch Spectroscopy

Colin J. Burke, Hengxiao Guo, Jiacheng Peng, Kaiwen Zhang, Minfeng Gu, Minzhi Kong, Mouyuan Sun, Shu Wang, Tinggui Wang, Xin Liu, Zhenfeng Sheng, Zhicheng He

arxiv:2006.08645 v3 · 2020-06-15 · 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{XC3XGCFVSCNH3KTH5ZPSLBPTUE}

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	2026-07-05T02:01:12.587882Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b8b77308b5909a7daa67ee5f2585f3a11c65f7dd7db4392b8d1b0f1f8e187a3f

Aliases

arxiv: 2006.08645 · arxiv_version: 2006.08645v3 · doi: 10.48550/arxiv.2006.08645 · pith_short_12: XC3XGCFVSCNH · pith_short_16: XC3XGCFVSCNH3KTH · pith_short_8: XC3XGCFV

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/XC3XGCFVSCNH3KTH5ZPSLBPTUE \
  | 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: b8b77308b5909a7daa67ee5f2585f3a11c65f7dd7db4392b8d1b0f1f8e187a3f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bdb40f1f7443d759f3daa4d98e353b03694f63ebe3a542e9e0c228133e7a8dc4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2020-06-15T18:00:23Z",
    "title_canon_sha256": "5de58a1d2adbeda40ec9f9d97b1cd2d0bbf51368d747082b9a6b1c96bfc3b0aa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2006.08645",
    "kind": "arxiv",
    "version": 3
  }
}