Pith Number

pith:C7IVVFND

pith:2020:C7IVVFNDBHSDU2SMSUNAF4OJNV

not attested not anchored not stored refs pending

To Test Machine Comprehension, Start by Defining Comprehension

Akash Bharadwaj, David Ferrucci, Gregory Burnham, Jennifer Chu-Carroll, Jesse Dunietz, Owen Rambow

arxiv:2005.01525 v2 · 2020-05-04 · cs.CL · 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{C7IVVFNDBHSDU2SMSUNAF4OJNV}

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	2026-07-05T01:01:57.059647Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

17d15a95a309e43a6a4c951a02f1c96d72086012d59b1c74f1d1935201c0d7df

Aliases

arxiv: 2005.01525 · arxiv_version: 2005.01525v2 · doi: 10.48550/arxiv.2005.01525 · pith_short_12: C7IVVFNDBHSD · pith_short_16: C7IVVFNDBHSDU2SM · pith_short_8: C7IVVFND

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/C7IVVFNDBHSDU2SMSUNAF4OJNV \
  | 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: 17d15a95a309e43a6a4c951a02f1c96d72086012d59b1c74f1d1935201c0d7df

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "04a73356fb18e00346e59479a0e29b376abcb829667ed146af55ac88e802bb7c",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2020-05-04T14:36:07Z",
    "title_canon_sha256": "b3e05eac7f34ed276bbb82d2e970eb7cdc68045cc03e0ea25f7b6f33f7c44555"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.01525",
    "kind": "arxiv",
    "version": 2
  }
}