Pith Number

pith:QOZTAONW

pith:2018:QOZTAONWQFHGEBYVDZLMZLJK6B

not attested not anchored not stored refs pending

A simple optimized amplitude pupil mask for attempting to direct imaging of Proxima b with SPHERE/ZIMPOL at VLT

Hans Martin Schmid, Jonas K\"uhn, Polychronis Patapis

arxiv:1808.06819 v1 · 2018-08-21 · 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{QOZTAONWQFHGEBYVDZLMZLJK6B}

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	2026-05-18T00:07:38.979416Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83b33039b6814e6207151e56ccad2af04620086a2eb46e740db837a5c896e529

Aliases

arxiv: 1808.06819 · arxiv_version: 1808.06819v1 · doi: 10.48550/arxiv.1808.06819 · pith_short_12: QOZTAONWQFHG · pith_short_16: QOZTAONWQFHGEBYV · pith_short_8: QOZTAONW

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/QOZTAONWQFHGEBYVDZLMZLJK6B \
  | 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: 83b33039b6814e6207151e56ccad2af04620086a2eb46e740db837a5c896e529

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "507e365105d2524ae9302e7801f161085f901a7a0b9b9b3670c72147eb936541",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-08-21T09:48:40Z",
    "title_canon_sha256": "c253ec3141ba68a7b62d76af2d963f0038560621800f1a240ce45ce784449843"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06819",
    "kind": "arxiv",
    "version": 1
  }
}