Pith Number

pith:MHU6Q745

pith:2017:MHU6Q745QZLCYMDTCRDC2KBJAZ

not attested not anchored not stored refs pending

Polynomial Apodizers for Centrally Obscured Vortex Coronagraphs

Johan Mazoyer, Kevin Fogarty, Laurent Pueyo, Mamadou N'Diaye

arxiv:1703.02994 v2 · 2017-03-08 · 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{MHU6Q745QZLCYMDTCRDC2KBJAZ}

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	2026-05-18T00:29:30.931432Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

61e9e87f9d86562c307314462d28290674c4e6485c57ee610bd765e80a58dd0c

Aliases

arxiv: 1703.02994 · arxiv_version: 1703.02994v2 · doi: 10.48550/arxiv.1703.02994 · pith_short_12: MHU6Q745QZLC · pith_short_16: MHU6Q745QZLCYMDT · pith_short_8: MHU6Q745

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/MHU6Q745QZLCYMDTCRDC2KBJAZ \
  | 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: 61e9e87f9d86562c307314462d28290674c4e6485c57ee610bd765e80a58dd0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b1e0bc52e0259b84bf393068da4113a7ec7570a2c5a47fa165d52561306203c",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2017-03-08T19:09:25Z",
    "title_canon_sha256": "d02e1f74cc60df57f6dc4b120f8b2fb409a52a51e11492ccb14d3a6cf6fba05b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.02994",
    "kind": "arxiv",
    "version": 2
  }
}