Pith Number

pith:SMXU4O7L

pith:2012:SMXU4O7L5TQDXLAAFHFAFMGLH4

not attested not anchored not stored refs pending

First Successful Adaptive Optics PSF Reconstruction at W. M. Keck Observatory

Chris Neyman, Julian Christou, Laurent Jolissaint, Laurent Mugnier, Peter Wizinowich

arxiv:1202.3486 v2 · 2012-02-16 · 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{SMXU4O7L5TQDXLAAFHFAFMGLH4}

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	2026-05-18T04:02:00.252865Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

932f4e3bebece03bac0029ca02b0cb3f3da7bc4e68ee8c49c1bf94a6d092d1f3

Aliases

arxiv: 1202.3486 · arxiv_version: 1202.3486v2 · doi: 10.48550/arxiv.1202.3486 · pith_short_12: SMXU4O7L5TQD · pith_short_16: SMXU4O7L5TQDXLAA · pith_short_8: SMXU4O7L

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/SMXU4O7L5TQDXLAAFHFAFMGLH4 \
  | 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: 932f4e3bebece03bac0029ca02b0cb3f3da7bc4e68ee8c49c1bf94a6d092d1f3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa21f7db2d1f900e7d1d117a04a594e079e7d003963101b096ec219b007f4117",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-02-16T01:17:12Z",
    "title_canon_sha256": "818af5d8589ac23ea3f63593cd89f18a2b8771da58b79409087b37d517f70ffc"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.3486",
    "kind": "arxiv",
    "version": 2
  }
}