Pith Number

pith:2A7O7H4N

pith:2018:2A7O7H4NXXTTYIFORC6Q3AZUBM

not attested not anchored not stored refs pending

Robust Implicit Backpropagation

Francois Fagan, Garud Iyengar

arxiv:1808.02433 v1 · 2018-08-07 · stat.ML · 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{2A7O7H4NXXTTYIFORC6Q3AZUBM}

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	2026-05-18T00:08:37.062379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d03eef9f8dbde73c20ae88bd0d83340b2e295942aa09faf04844ee13ee20fa75

Aliases

arxiv: 1808.02433 · arxiv_version: 1808.02433v1 · doi: 10.48550/arxiv.1808.02433 · pith_short_12: 2A7O7H4NXXTT · pith_short_16: 2A7O7H4NXXTTYIFO · pith_short_8: 2A7O7H4N

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/2A7O7H4NXXTTYIFORC6Q3AZUBM \
  | 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: d03eef9f8dbde73c20ae88bd0d83340b2e295942aa09faf04844ee13ee20fa75

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "640288c83703613dcb496bb189d2175409ebf41e169d35848c736188bd43ede9",
    "cross_cats_sorted": [
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "stat.ML",
    "submitted_at": "2018-08-07T15:59:08Z",
    "title_canon_sha256": "ebd110341ef9b373525a6cc90884df7cf853d298a24e3bcb04ce44362133c00e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.02433",
    "kind": "arxiv",
    "version": 1
  }
}