Pith Number

pith:6ULPEM5D

pith:2019:6ULPEM5DWZIZM4MJMEIP4I6SVL

not attested not anchored not stored refs pending

Are All Layers Created Equal?

Chiyuan Zhang, Samy Bengio, Yoram Singer

arxiv:1902.01996 v4 · 2019-02-06 · stat.ML · cs.AI · 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{6ULPEM5DWZIZM4MJMEIP4I6SVL}

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	2026-07-05T04:03:08.664270Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f516f233a3b6519671896110fe23d2aae6903ce25e8db5c075560e4387b0ab6e

Aliases

arxiv: 1902.01996 · arxiv_version: 1902.01996v4 · doi: 10.48550/arxiv.1902.01996 · pith_short_12: 6ULPEM5DWZIZ · pith_short_16: 6ULPEM5DWZIZM4MJ · pith_short_8: 6ULPEM5D

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/6ULPEM5DWZIZM4MJMEIP4I6SVL \
  | 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: f516f233a3b6519671896110fe23d2aae6903ce25e8db5c075560e4387b0ab6e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45f6071ddedc8de903a306050e728e81bf895d8b81ca9a22eb48d8698d7aaa83",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2019-02-06T01:29:01Z",
    "title_canon_sha256": "e4642fda323bf1e82110526d8d289fcc02011501d0ac9e52076ce8e5507ebcf1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.01996",
    "kind": "arxiv",
    "version": 4
  }
}