Pith Number

pith:GXW4WBCC

pith:2018:GXW4WBCC562VWPA6XFQKHO66LT

not attested not anchored not stored refs pending

Tangent: Automatic differentiation using source-code transformation for dynamically typed array programming

Alexander B Wiltschko, Bart van Merri\"enboer, Dan Moldovan

arxiv:1809.09569 v2 · 2018-09-25 · cs.LG · cs.SE · 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{GXW4WBCC562VWPA6XFQKHO66LT}

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	2026-05-18T00:04:44.230528Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

35edcb0442efb55b3c1eb960a3bbde5cf7987e1582af039b4e066d76fa55dd97

Aliases

arxiv: 1809.09569 · arxiv_version: 1809.09569v2 · doi: 10.48550/arxiv.1809.09569 · pith_short_12: GXW4WBCC562V · pith_short_16: GXW4WBCC562VWPA6 · pith_short_8: GXW4WBCC

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/GXW4WBCC562VWPA6XFQKHO66LT \
  | 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: 35edcb0442efb55b3c1eb960a3bbde5cf7987e1582af039b4e066d76fa55dd97

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "be760d15011821f06cbfe97ec1562dda82594f6409a269e629aff3d5d8b6aad5",
    "cross_cats_sorted": [
      "cs.SE",
      "stat.ML"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2018-09-25T16:08:37Z",
    "title_canon_sha256": "0c8e991c8585aef3fa8b1fc3ae99c5f32d48dfc36ebeca3b56e43cc5169f22bd"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.09569",
    "kind": "arxiv",
    "version": 2
  }
}