Pith Number

pith:D4OWPRAS

pith:2019:D4OWPRASFF2UQQBMLXNNBEVEDD

not attested not anchored not stored refs pending

Logical reduction of metarules

Andrew Cropper, Sophie Tourret

arxiv:1907.10952 v1 · 2019-07-25 · cs.LG · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{D4OWPRASFF2UQQBMLXNNBEVEDD}

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	2026-05-17T23:39:33.926418Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1f1d67c412297548402c5ddad092a418e0dc0704123a55d4573892803f11b218

Aliases

arxiv: 1907.10952 · arxiv_version: 1907.10952v1 · doi: 10.48550/arxiv.1907.10952 · pith_short_12: D4OWPRASFF2U · pith_short_16: D4OWPRASFF2UQQBM · pith_short_8: D4OWPRAS

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/D4OWPRASFF2UQQBMLXNNBEVEDD \
  | 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: 1f1d67c412297548402c5ddad092a418e0dc0704123a55d4573892803f11b218

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c2af09047976ba35b08afd7d472fee5a25059baf055c64eceb14d5cf1cdbd79",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2019-07-25T10:31:34Z",
    "title_canon_sha256": "308f3eaa83c3bf48ef878acb2e1199bb393accdfb58039e844940dcd3f3d7974"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.10952",
    "kind": "arxiv",
    "version": 1
  }
}