Pith Number

pith:YN6QJU65

pith:2019:YN6QJU655P775FPOWFIYHUILTP

not attested not anchored not stored refs pending

Mapping the Inner Structure of Quasars with Time-Domain Spectroscopy

Abhishek Prakash, Adam D. Myers, Alexander Kutyrev, Andreea Petric, Benny Trakhtenbrot, Bill Purcell, Brian Metzger, Catherine J. Grier, Chelsea MacLeod, Christopher O'Dea, Daryl Haggard, Dragana Ilic, Edo Berger, Gary Melnick, George Rieke, Gisella De Rosa, Gordon T. Richards, Guilin Liu, Hector Ibarra Medel, Jacob Jencson, Jennifer I-Hsiu Li, Jenny Greene, Josh Grindlay, Juna Kollmeier, Laura Ferrarese, Linhua Jiang, Luis Ho, Luka \v{C}. Popovi\'c, Mansi Kasliwal, Matthew Graham, Michael Wood-Vasey, Nial Tanvir, Patrick B. Hall, Qian Yang, Scott Anderson, St\'ephanie Juneau, Suvi Gezari, W.N. Brandt, Xiaohui Fan, Xin Liu, Yongquan Xue, Yue Shen, Zeljko Ivezic

arxiv:1903.04533 v1 · 2019-03-11 · 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{YN6QJU655P775FPOWFIYHUILTP}

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	2026-05-17T23:51:29.359773Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c37d04d3ddebfffe95eeb15183d10b9bc9b9172c9560e7d6a9fc9ddf7f503edd

Aliases

arxiv: 1903.04533 · arxiv_version: 1903.04533v1 · doi: 10.48550/arxiv.1903.04533 · pith_short_12: YN6QJU655P77 · pith_short_16: YN6QJU655P775FPO · pith_short_8: YN6QJU65

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/YN6QJU655P775FPOWFIYHUILTP \
  | 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: c37d04d3ddebfffe95eeb15183d10b9bc9b9172c9560e7d6a9fc9ddf7f503edd

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab3a8780ed77d1948c7cdfa59bf6e88e055550ef3de45221952965a3d3aef222",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-11T18:39:43Z",
    "title_canon_sha256": "639094faafb720f8e4ea437af4e244aa540bb05c12b6d11a5be4360997737220"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.04533",
    "kind": "arxiv",
    "version": 1
  }
}