Pith Number

pith:6HSG77LE

pith:2012:6HSG77LEAQUMHCGIRJYR6MGZA6

not attested not anchored not stored refs pending

Kalman Filter Estimation for Focal Plane Wavefront Correction

N. Jeremy Kasdin, Tyler D. Groff

arxiv:1208.3462 v1 · 2012-08-16 · 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{6HSG77LEAQUMHCGIRJYR6MGZA6}

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	2026-05-18T01:55:15.167784Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f1e46ffd640428c388c88a711f30d9079f5cb4213ede763e78cf7c756073fceb

Aliases

arxiv: 1208.3462 · arxiv_version: 1208.3462v1 · doi: 10.48550/arxiv.1208.3462 · pith_short_12: 6HSG77LEAQUM · pith_short_16: 6HSG77LEAQUMHCGI · pith_short_8: 6HSG77LE

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/6HSG77LEAQUMHCGIRJYR6MGZA6 \
  | 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: f1e46ffd640428c388c88a711f30d9079f5cb4213ede763e78cf7c756073fceb

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "402dc9265758f8c76b3cf544cfc496511871dfbbe8698c349e836c15da320a3e",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2012-08-16T20:00:00Z",
    "title_canon_sha256": "7a35b41d5f89ab465e6b664153dcefe31b7e9fd3828c52f4b0f6d42d7a0ef854"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1208.3462",
    "kind": "arxiv",
    "version": 1
  }
}