Pith Number

pith:3BN7DL2N

pith:2019:3BN7DL2NM73FZGYIGE3WUVF4KZ

not attested not anchored not stored refs pending

UHop: An Unrestricted-Hop Relation Extraction Framework for Knowledge-Based Question Answering

Chih-Hung Chang, Jijnasa Nayak, Lun-Wei Ku, Yi-Pei Chen, Zi-Yuan Chen

arxiv:1904.01246 v1 · 2019-04-02 · 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{3BN7DL2NM73FZGYIGE3WUVF4KZ}

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	2026-05-17T23:49:35.415173Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d85bf1af4d67f65c9b0831376a54bc566055ae962d2ef0ba0f8dc8882d4b4a8c

Aliases

arxiv: 1904.01246 · arxiv_version: 1904.01246v1 · doi: 10.48550/arxiv.1904.01246 · pith_short_12: 3BN7DL2NM73F · pith_short_16: 3BN7DL2NM73FZGYI · pith_short_8: 3BN7DL2N

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/3BN7DL2NM73FZGYIGE3WUVF4KZ \
  | 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: d85bf1af4d67f65c9b0831376a54bc566055ae962d2ef0ba0f8dc8882d4b4a8c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6068ed97f61543b0a9d74af3bae2a2bedc23449354fdd0d312f21bcf6b0aa52b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-04-02T07:08:25Z",
    "title_canon_sha256": "c5cf8e004fdf8587973c6ff4035f2dc01fb8c645257cfbc069ebb5cbade2f03d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.01246",
    "kind": "arxiv",
    "version": 1
  }
}