Pith Number

pith:OOPQUZBV

pith:2015:OOPQUZBVMITITV3NOX5AO5V7ZI

not attested not anchored not stored refs pending

Online Crowdsourcing

Changbo Zhu, Huan Xu, Shuicheng Yan

arxiv:1512.02393 v2 · 2015-12-08 · 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{OOPQUZBVMITITV3NOX5AO5V7ZI}

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	2026-05-17T23:54:32.111640Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

739f0a6435622689d76d75fa0776bfca35eb2cbadaf1f151d54d60c1ae242ad9

Aliases

arxiv: 1512.02393 · arxiv_version: 1512.02393v2 · doi: 10.48550/arxiv.1512.02393 · pith_short_12: OOPQUZBVMITI · pith_short_16: OOPQUZBVMITITV3N · pith_short_8: OOPQUZBV

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/OOPQUZBVMITITV3NOX5AO5V7ZI \
  | 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: 739f0a6435622689d76d75fa0776bfca35eb2cbadaf1f151d54d60c1ae242ad9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0e9f737d2abfefc9fb05ad8ad5aafea6d17e4e3994e4f5f6bfc22d3e46c9cd5d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2015-12-08T10:35:29Z",
    "title_canon_sha256": "6adbde4b178c19e13479201e3e4f38452312f44b4084b78546dd781defe8bc7a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1512.02393",
    "kind": "arxiv",
    "version": 2
  }
}