Pith Number

pith:QITGFHDP

pith:2011:QITGFHDPHMRE6FXRYDKCMNCYZQ

not attested not anchored not stored refs pending

High contrast experiment of an AO-free coronagraph with a checkerboard pupil mask

K. Enya, K. Haze, L. Abe, S. Tanaka, T. Nakagawa, T. Sato, T. Wakayama

arxiv:1108.3194 v1 · 2011-08-16 · 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{QITGFHDPHMRE6FXRYDKCMNCYZQ}

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	2026-05-18T04:15:27.795010Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8226629c6f3b224f16f1c0d4263458cc2744bf0067c78fbcd10ed6cdb08e9ba7

Aliases

arxiv: 1108.3194 · arxiv_version: 1108.3194v1 · doi: 10.48550/arxiv.1108.3194 · pith_short_12: QITGFHDPHMRE · pith_short_16: QITGFHDPHMRE6FXR · pith_short_8: QITGFHDP

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/QITGFHDPHMRE6FXRYDKCMNCYZQ \
  | 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: 8226629c6f3b224f16f1c0d4263458cc2744bf0067c78fbcd10ed6cdb08e9ba7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b76d7df77a5f8a8398caa4bec0eefac5847e1180cb37658eabe7c4d6ad718225",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2011-08-16T09:55:47Z",
    "title_canon_sha256": "932ebb3f4ed93a1ca3f48a7ddc9141e3bfcd24853ecf89e9ba3ab29ebdc64390"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.3194",
    "kind": "arxiv",
    "version": 1
  }
}