Pith Number

pith:K2QPQNFD

pith:2018:K2QPQNFDZMDMF4P4QON2Y4YI42

not attested not anchored not stored refs pending

Modeling coronagraphic extreme wavefront control systems for high contrast imaging in ground and space telescope missions

Alexander Rodack, Ashley Carlton, David Doelman, Emiel Por, Ewan Douglas, Frans Snik, Jared Males, Jennifer Lumbres, Jim Clark, Justin Knight, Katie Morzinski, Kelsey Miller, Kerri Cahoy, Kyle Van Gorkom, Laird Close, Lauren Schatz, Lee Feinberg, Michael Wilby, Olivier Guyon, Weston Marlow

arxiv:1807.04729 v1 · 2018-07-12 · astro-ph.IM · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K2QPQNFDZMDMF4P4QON2Y4YI42}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T00:10:52.671856Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

56a0f834a3cb06c2f1fc839bac7308e6b0de52c2345ef3e4f5f4aac5f4cd3137

Aliases

arxiv: 1807.04729 · arxiv_version: 1807.04729v1 · doi: 10.48550/arxiv.1807.04729 · pith_short_12: K2QPQNFDZMDM · pith_short_16: K2QPQNFDZMDMF4P4 · pith_short_8: K2QPQNFD

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/K2QPQNFDZMDMF4P4QON2Y4YI42 \
  | 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: 56a0f834a3cb06c2f1fc839bac7308e6b0de52c2345ef3e4f5f4aac5f4cd3137

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d90130d90da25f4606888f205a08dc813bd64a4607f5d47158f04b5bce2a5ee7",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-07-12T17:07:02Z",
    "title_canon_sha256": "c85244d1b4149b56ff9fdec07c11bf5f6eba74f866797afbf7df8ec5d24b76e7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.04729",
    "kind": "arxiv",
    "version": 1
  }
}