Pith Number

pith:QHJNVTTM

pith:2023:QHJNVTTMDQ7LRKPEVRHNQXCLLD

not attested not anchored not stored refs pending

Exploring calibration algorithms to maximize the null depth in KPIC's vortex fiber nulling mode

Daniel Echeverri, Dimitri Mawet, Garreth Ruane, Jerry Xuan, Maxwell A. Millar-Blanchaer, Sofia Hillman

arxiv:2309.16073 v1 · 2023-09-28 · 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{QHJNVTTMDQ7LRKPEVRHNQXCLLD}

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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	2026-07-05T06:55:11.071168Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

81d2dace6c1c3eb8a9e4ac4ed85c4b58c1d1483d7ecfa2659cbbf55c84da1685

Aliases

arxiv: 2309.16073 · arxiv_version: 2309.16073v1 · doi: 10.48550/arxiv.2309.16073 · pith_short_12: QHJNVTTMDQ7L · pith_short_16: QHJNVTTMDQ7LRKPE · pith_short_8: QHJNVTTM

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/QHJNVTTMDQ7LRKPEVRHNQXCLLD \
  | 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: 81d2dace6c1c3eb8a9e4ac4ed85c4b58c1d1483d7ecfa2659cbbf55c84da1685

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ce397021819e34919f97ff5bf2d6b47c3d1565725bcb27785e001947ea359e84",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2023-09-28T00:08:42Z",
    "title_canon_sha256": "54301e32dbb6eab9335718c4dd90beef170f87fb6e6413392779533c350f5a30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2309.16073",
    "kind": "arxiv",
    "version": 1
  }
}