Pith Number

pith:7NZPGVUG

pith:2020:7NZPGVUG5XZF2YUOCSHA2PQXFS

not attested not anchored not stored refs pending

Reverse engineering learned optimizers reveals known and novel mechanisms

David Sussillo, Jascha Sohl-Dickstein, Luke Metz, Niru Maheswaranathan, Ruoxi Sun

arxiv:2011.02159 v2 · 2020-11-04 · cs.LG · cs.NE · stat.ML

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7NZPGVUG5XZF2YUOCSHA2PQXFS}

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	2026-07-05T03:38:51.376829Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb72f35686edf25d628e148e0d3e172c8040dfa506494fde1a8217008dde9f0f

Aliases

arxiv: 2011.02159 · arxiv_version: 2011.02159v2 · doi: 10.48550/arxiv.2011.02159 · pith_short_12: 7NZPGVUG5XZF · pith_short_16: 7NZPGVUG5XZF2YUO · pith_short_8: 7NZPGVUG

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/7NZPGVUG5XZF2YUOCSHA2PQXFS \
  | 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: fb72f35686edf25d628e148e0d3e172c8040dfa506494fde1a8217008dde9f0f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6b0d3f4a677922825b479625ac63b466bae1596e9032876b75e4a790b89592e1",
    "cross_cats_sorted": [
      "cs.NE",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2020-11-04T07:12:43Z",
    "title_canon_sha256": "bf4b351bc7d6e14c67cfedfafb9bfbfbd54302f770521543ae57933a7d3e4757"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2011.02159",
    "kind": "arxiv",
    "version": 2
  }
}