Pith Number

pith:VLB2AIFV

pith:2021:VLB2AIFVMZMZ27P2D4VZCIFEB4

not attested not anchored not stored refs pending

Automatic Task Requirements Writing Evaluation via Machine Reading Comprehension

Guowei Xu, Peilei Jia, Shiting Xu, Wenbiao Ding, Zhongqin Wu, Zitao Liu

arxiv:2107.07957 v1 · 2021-07-15 · 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{VLB2AIFVMZMZ27P2D4VZCIFEB4}

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	2026-07-05T02:58:31.100509Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

aac3a020b566599d7dfa1f2b9120a40f2413fb10018a25dbd89521628224451e

Aliases

arxiv: 2107.07957 · arxiv_version: 2107.07957v1 · doi: 10.48550/arxiv.2107.07957 · pith_short_12: VLB2AIFVMZMZ · pith_short_16: VLB2AIFVMZMZ27P2 · pith_short_8: VLB2AIFV

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/VLB2AIFVMZMZ27P2D4VZCIFEB4 \
  | 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: aac3a020b566599d7dfa1f2b9120a40f2413fb10018a25dbd89521628224451e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "61340dc65db17c1c1d65e3ea4f68c9059cc752bc99583a38a9bd35ae619e0606",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-07-15T05:12:52Z",
    "title_canon_sha256": "fc59322759b3e0177f991d692d1426b872ed3afe49385a14a893ca5fdbd03af2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2107.07957",
    "kind": "arxiv",
    "version": 1
  }
}