Pith Number

pith:PQ2H2N5B

pith:2021:PQ2H2N5BMTZJNRV2IGAIKUDZVP

not attested not anchored not stored refs pending

A Measure of Research Taste

David Hafner, Vladlen Koltun

arxiv:2105.08089 v1 · 2021-05-17 · cs.DL · 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{PQ2H2N5BMTZJNRV2IGAIKUDZVP}

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	2026-07-05T02:40:51.540231Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c347d37a164f296c6ba4180855079abd212e0f93bdb6243592bd186f3d33678

Aliases

arxiv: 2105.08089 · arxiv_version: 2105.08089v1 · doi: 10.48550/arxiv.2105.08089 · pith_short_12: PQ2H2N5BMTZJ · pith_short_16: PQ2H2N5BMTZJNRV2 · pith_short_8: PQ2H2N5B

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/PQ2H2N5BMTZJNRV2IGAIKUDZVP \
  | 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: 7c347d37a164f296c6ba4180855079abd212e0f93bdb6243592bd186f3d33678

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "802cf70516528ebe4da2e258f06149d354027bab228046b6e2a916b1cb898d4f",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DL",
    "submitted_at": "2021-05-17T18:01:47Z",
    "title_canon_sha256": "0dfbe24a407b0702df6206e25c8dff6ecce19f7244db07afe547f36d799113c9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2105.08089",
    "kind": "arxiv",
    "version": 1
  }
}