Pith Number

pith:QOHRCL7O

pith:2018:QOHRCL7OOCXFEVCESXBD2ODMDA

not attested not anchored not stored refs pending

Characterizing the performance of the NIRC2 vortex coronagraph at W.M. Keck Observatory

Bruno Femen\'ia Castell\'a, Carlos Alberto Gomez Gonzalez, Carlos Alvarez, Dimitri Mawet, \'Elodie Choquet, Elsa huby, Eugene Serabyn, Garreth Ruane, Heather A. Knutson, Henry Ngo, Keith Matthews, Marta Bryan, Olivier Absil, Sam Ragland, Therese Cook, Vanessa P. Bailey, W. Jerry Xuan, Zo\"e Zawol

arxiv:1808.05297 v1 · 2018-08-15 · astro-ph.EP · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QOHRCL7OOCXFEVCESXBD2ODMDA}

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	2026-05-18T00:04:55.059652Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

838f112fee70ae52544495c23d386c183bc73f6f30e37468bdfe08ed5a2da040

Aliases

arxiv: 1808.05297 · arxiv_version: 1808.05297v1 · doi: 10.48550/arxiv.1808.05297 · pith_short_12: QOHRCL7OOCXF · pith_short_16: QOHRCL7OOCXFEVCE · pith_short_8: QOHRCL7O

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/QOHRCL7OOCXFEVCESXBD2ODMDA \
  | 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: 838f112fee70ae52544495c23d386c183bc73f6f30e37468bdfe08ed5a2da040

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "87e9380dfc26db72227bc5f1ddbd229f3b748c0f9fa58d699493b4ead8f2d0ce",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2018-08-15T22:25:15Z",
    "title_canon_sha256": "abaaba665d4b1cd07161a93dbd6e675e89d31337f58c5357f72fca2e627faaaf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.05297",
    "kind": "arxiv",
    "version": 1
  }
}