Pith Number

pith:6AP7HGOV

pith:2018:6AP7HGOVVS5ZXSR4BSED4GDVEE

not attested not anchored not stored refs pending

Deep Hierarchical Machine: a Flexible Divide-and-Conquer Architecture

Shichao Li, Tim Cheng, Xin Yang

arxiv:1812.00647 v1 · 2018-12-03 · cs.CV · 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{6AP7HGOVVS5ZXSR4BSED4GDVEE}

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	2026-05-17T23:59:19.320355Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f01ff399d5acbb9bca3c0c883e1875210b6b21f0b3d28856dd719fefc1bbdda5

Aliases

arxiv: 1812.00647 · arxiv_version: 1812.00647v1 · doi: 10.48550/arxiv.1812.00647 · pith_short_12: 6AP7HGOVVS5Z · pith_short_16: 6AP7HGOVVS5ZXSR4 · pith_short_8: 6AP7HGOV

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/6AP7HGOVVS5ZXSR4BSED4GDVEE \
  | 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: f01ff399d5acbb9bca3c0c883e1875210b6b21f0b3d28856dd719fefc1bbdda5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b0dfb3cc6c615ac1894117194de8ee3074b1b85a1c28c549861c320e12d2a43",
    "cross_cats_sorted": [
      "cs.AI",
      "cs.LG"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CV",
    "submitted_at": "2018-12-03T10:34:01Z",
    "title_canon_sha256": "1ddac2583e804c2775c45885af6eebd74096ed89ae949299901fba70d953478f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.00647",
    "kind": "arxiv",
    "version": 1
  }
}