Pith Number

pith:OPIZE7VM

pith:2021:OPIZE7VM2246DESYSED6HF3XQJ

not attested not anchored not stored refs pending

The AI Index 2021 Annual Report

Barbara Grosz, Daniel Zhang, Deep Ganguli, Erik Brynjolfsson, Jack Clark, James Manyika, John Etchemendy, Juan Carlos Niebles, Michael Sellitto, Raymond Perrault, Saurabh Mishra, Terah Lyons, Yoav Shoham

arxiv:2103.06312 v1 · 2021-03-09 · cs.AI · cs.GL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OPIZE7VM2246DESYSED6HF3XQJ}

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.

Cited by

2 papers in Pith

Topical Phase Transitions in Artificial Intelligence Research: Large-Scale Evidence and an Early-Warning Signature for Emerging Topics

A Survey on Foundation Models for Personalized Federated Intelligence

Receipt and verification

First computed	2026-07-05T02:22:07.972614Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73d1927eacd6b9e192589107e397778261e55b4adc89fc9243836094aac2ae57

Aliases

arxiv: 2103.06312 · arxiv_version: 2103.06312v1 · doi: 10.48550/arxiv.2103.06312 · pith_short_12: OPIZE7VM2246 · pith_short_16: OPIZE7VM2246DESY · pith_short_8: OPIZE7VM

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/OPIZE7VM2246DESYSED6HF3XQJ \
  | 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: 73d1927eacd6b9e192589107e397778261e55b4adc89fc9243836094aac2ae57

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9d6803e8f4cfa36c9ca0421d701a5bd21a9eda27c7287f748f4ba0f0387854f9",
    "cross_cats_sorted": [
      "cs.GL"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2021-03-09T02:29:44Z",
    "title_canon_sha256": "dcc245c6b6351f3e9c5711ee7210ab521c698d07b5893cec84d72ff050eb62c3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.06312",
    "kind": "arxiv",
    "version": 1
  }
}