Pith Number

pith:62PNXOGS

pith:2020:62PNXOGSW4Z5OIDZ4H377OYQU4

not attested not anchored not stored refs pending

High-contrast Demonstration of an Apodized Vortex Coronagraph

A J Eldorado Riggs, Carl T. Coker, Daniel Echeverri, Dimitri Mawet, Garreth Ruane, Jacques-Robert Delorme, Jason Fucik, J. Kent Wallace, Jorge Llop-Sayson, Nemanja Jovanovic

arxiv:2002.00936 v1 · 2020-02-03 · 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{62PNXOGSW4Z5OIDZ4H377OYQU4}

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	2026-07-05T00:37:58.861989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f69edbb8d2b733d72079e1f7ffbb10a72caa418172626457c265facaceb35ece

Aliases

arxiv: 2002.00936 · arxiv_version: 2002.00936v1 · doi: 10.48550/arxiv.2002.00936 · pith_short_12: 62PNXOGSW4Z5 · pith_short_16: 62PNXOGSW4Z5OIDZ · pith_short_8: 62PNXOGS

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/62PNXOGSW4Z5OIDZ4H377OYQU4 \
  | 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: f69edbb8d2b733d72079e1f7ffbb10a72caa418172626457c265facaceb35ece

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e8abe9473f9fdad73234f74acbb2702edc76daf238c6256da50bfac64c73305b",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2020-02-03T18:40:52Z",
    "title_canon_sha256": "e9ca45ca34880094ec708bfdb2eb5481baba8d28fb500001c6b41f30a4dc70dd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.00936",
    "kind": "arxiv",
    "version": 1
  }
}