Pith Number

pith:YZWRBWKW

pith:2012:YZWRBWKWWTHSLMDCEWI7UT4ORV

not attested not anchored not stored refs pending

Variational Optimization

David Barber, Joe Staines

arxiv:1212.4507 v2 · 2012-12-18 · stat.ML · cs.LG · cs.NA

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{YZWRBWKWWTHSLMDCEWI7UT4ORV}

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.

Cited by

1 paper in Pith

The Virtual Patch Clamp: Imputing C. elegans Membrane Potentials from Calcium Imaging

Receipt and verification

First computed	2026-05-18T03:38:03.297610Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c66d10d956b4cf25b0622591fa4f8e8d70a5d4ea2a2f1f1fa6217b9781acad3c

Aliases

arxiv: 1212.4507 · arxiv_version: 1212.4507v2 · doi: 10.48550/arxiv.1212.4507 · pith_short_12: YZWRBWKWWTHS · pith_short_16: YZWRBWKWWTHSLMDC · pith_short_8: YZWRBWKW

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/YZWRBWKWWTHSLMDCEWI7UT4ORV \
  | 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: c66d10d956b4cf25b0622591fa4f8e8d70a5d4ea2a2f1f1fa6217b9781acad3c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4abcf68dea8bf20ef9de8406e6abcd642ae2694e006c5d6f6bb6dd8c20932e11",
    "cross_cats_sorted": [
      "cs.LG",
      "cs.NA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2012-12-18T21:06:10Z",
    "title_canon_sha256": "b6470250bc93114b5c5e8858ac130b247e0adf70ee466da7de75f5d617595e0d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4507",
    "kind": "arxiv",
    "version": 2
  }
}