Pith Number

pith:LHGFYNCQ

pith:2019:LHGFYNCQ5OTGTRYZK2GTXMQHTT

not attested not anchored not stored refs pending

Gemini Imaging of the Host Galaxies of Changing-Look Quasars

Chelsea L. MacLeod, Daryl Haggard, Jessie C. Runnoe, John J. Ruan, Michael Eracleous, Paul J. L. Charlton, Scott F. Anderson

arxiv:1903.08122 v2 · 2019-03-19 · astro-ph.GA · astro-ph.HE

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{LHGFYNCQ5OTGTRYZK2GTXMQHTT}

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	2026-05-17T23:46:18.138804Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

59cc5c3450eba669c719568d3bb2079cc2588072ad7029ceb8155511d6a60839

Aliases

arxiv: 1903.08122 · arxiv_version: 1903.08122v2 · doi: 10.48550/arxiv.1903.08122 · pith_short_12: LHGFYNCQ5OTG · pith_short_16: LHGFYNCQ5OTGTRYZ · pith_short_8: LHGFYNCQ

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/LHGFYNCQ5OTGTRYZK2GTXMQHTT \
  | 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: 59cc5c3450eba669c719568d3bb2079cc2588072ad7029ceb8155511d6a60839

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2200df2987479d3275c744f6c7c28d2c54fb6feb02a4ea5d41260457c4107320",
    "cross_cats_sorted": [
      "astro-ph.HE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-03-19T17:31:26Z",
    "title_canon_sha256": "a69791bdb9e13243112a0c0cd4a9ea66e71990ad0e3b6e2ff0f41c9dee572832"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1903.08122",
    "kind": "arxiv",
    "version": 2
  }
}