Pith Number

pith:CZTCOK6H

pith:2019:CZTCOK6H6PJOZMNYBDMNYAP6QH

not attested not anchored not stored refs pending

Astro2020 Science White Paper: A New Era for X-ray Lensing Studies of Quasars and Galaxies

Andrew J. Ptak, David Pooley, George Chartas, Henric Krawczynski, Richard F. Mushotzky

arxiv:1904.02018 v1 · 2019-04-03 · 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{CZTCOK6H6PJOZMNYBDMNYAP6QH}

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	2026-05-17T23:49:28.968577Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1666272bc7f3d2ecb1b808d8dc01fe81d716813f0fd73dccee9e072f179326b6

Aliases

arxiv: 1904.02018 · arxiv_version: 1904.02018v1 · doi: 10.48550/arxiv.1904.02018 · pith_short_12: CZTCOK6H6PJO · pith_short_16: CZTCOK6H6PJOZMNY · pith_short_8: CZTCOK6H

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/CZTCOK6H6PJOZMNYBDMNYAP6QH \
  | 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: 1666272bc7f3d2ecb1b808d8dc01fe81d716813f0fd73dccee9e072f179326b6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f68d25447b2f35195437aeec7c44f2752bb529a98f755b4eb226a6604040a3ef",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.HE",
    "submitted_at": "2019-04-03T14:23:39Z",
    "title_canon_sha256": "8d88b8f4ea509c1e77187bf26a5789184f70dc859fa1595397410d9bf290395b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.02018",
    "kind": "arxiv",
    "version": 1
  }
}