Pith Number

pith:NNM6J23K

pith:2021:NNM6J23KPYDXDY5QRSIBZHU5EL

not attested not anchored not stored refs pending

Key Information Extraction From Documents: Evaluation And Generator

Constantin Spille, Mirela Popa, Oliver Bensch

arxiv:2106.14624 v1 · 2021-06-09 · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{NNM6J23KPYDXDY5QRSIBZHU5EL}

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	2026-07-05T02:52:52.334390Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6b59e4eb6a7e0771e3b08c901c9e9d22d0fe6f1a0ba52d5961ee92f8bfa1ff8d

Aliases

arxiv: 2106.14624 · arxiv_version: 2106.14624v1 · doi: 10.48550/arxiv.2106.14624 · pith_short_12: NNM6J23KPYDX · pith_short_16: NNM6J23KPYDXDY5Q · pith_short_8: NNM6J23K

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/NNM6J23KPYDXDY5QRSIBZHU5EL \
  | 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: 6b59e4eb6a7e0771e3b08c901c9e9d22d0fe6f1a0ba52d5961ee92f8bfa1ff8d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a962219c9b568a1eb0e06921d50356f4c9f08b062cda8a8271d6fb3b0e2f5050",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-06-09T16:12:21Z",
    "title_canon_sha256": "f2e64ae96d0b265e70ea92254aceb4049d66128fe4fbf5edd0e9361e946ef5b4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2106.14624",
    "kind": "arxiv",
    "version": 1
  }
}