Pith Number

pith:NWSREPIT

pith:2019:NWSREPITAUVHQP4WADLOYAJGVF

not attested not anchored not stored refs pending

The vortex fiber nulling mode of the Keck Planet Imager and Characterizer (KPIC)

Charlotte Bond, Daniel Echeverri, Dimitri Mawet, Eugene Serabyn, Garreth Ruane, Jacklyn Pezzato, Jacques-Robert Delorme, Jason Wang, J. Kent Wallace, Nemanja Jovanovic, Thomas Hayama

arxiv:1909.03538 v1 · 2019-09-08 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NWSREPITAUVHQP4WADLOYAJGVF}

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	2026-07-05T00:03:58.813607Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6da5123d13052a783f9600d6ec0126a9716b8d5141fd8a0e7bc741fabfd65889

Aliases

arxiv: 1909.03538 · arxiv_version: 1909.03538v1 · doi: 10.48550/arxiv.1909.03538 · pith_short_12: NWSREPITAUVH · pith_short_16: NWSREPITAUVHQP4W · pith_short_8: NWSREPIT

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/NWSREPITAUVHQP4WADLOYAJGVF \
  | 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: 6da5123d13052a783f9600d6ec0126a9716b8d5141fd8a0e7bc741fabfd65889

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6e20049185bb0e012da46c26ae5e2405af35b5e9567d7f5b59f3fe5dd5678243",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-09-08T20:07:54Z",
    "title_canon_sha256": "2e9c3cb4e4b8adf6e903294e9d170a70a93ba5dcc858dabee4044a73998ff598"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.03538",
    "kind": "arxiv",
    "version": 1
  }
}