Pith Number

pith:BRWOPG4X

pith:2015:BRWOPG4XGZUQIYIQ5ZQ47XXNUR

not attested not anchored not stored refs pending

A Light Touch for Heavily Constrained SGD

Andrew Cotter, Jan Pfeifer, Maya Gupta

arxiv:1512.04960 v2 · 2015-12-15 · cs.LG

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BRWOPG4XGZUQIYIQ5ZQ47XXNUR}

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	2026-05-18T01:01:28.878105Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0c6ce79b973669046110ee61cfdeeda461fed95ad7e72789ad91b10fa5efb903

Aliases

arxiv: 1512.04960 · arxiv_version: 1512.04960v2 · doi: 10.48550/arxiv.1512.04960 · pith_short_12: BRWOPG4XGZUQ · pith_short_16: BRWOPG4XGZUQIYIQ · pith_short_8: BRWOPG4X

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/BRWOPG4XGZUQIYIQ5ZQ47XXNUR \
  | 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: 0c6ce79b973669046110ee61cfdeeda461fed95ad7e72789ad91b10fa5efb903

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c6f3a6f826e33036b5a399ffefc5e4c43f61715c96c552d18461a59c077e8f3a",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-12-15T21:07:02Z",
    "title_canon_sha256": "e894727c98d506fc28641300009394d7f0f9e81cf054400a026620a9761a260e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.04960",
    "kind": "arxiv",
    "version": 2
  }
}