Pith Number

pith:HUOWHBPE

pith:2022:HUOWHBPEHUIWSEQZNSVSH6QUAZ

not attested not anchored not stored refs pending

Pre-train a Discriminative Text Encoder for Dense Retrieval via Contrastive Span Prediction

Jiafeng Guo, Ruqing Zhang, Xinyu Ma, Xueqi Cheng, Yixing Fan

arxiv:2204.10641 v1 · 2022-04-22 · cs.IR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HUOWHBPEHUIWSEQZNSVSH6QUAZ}

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	2026-07-05T04:16:59.391309Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3d1d6385e43d116912196cab23fa14064241f5c1fbc2f01fcbaa3eba1a359b22

Aliases

arxiv: 2204.10641 · arxiv_version: 2204.10641v1 · doi: 10.48550/arxiv.2204.10641 · pith_short_12: HUOWHBPEHUIW · pith_short_16: HUOWHBPEHUIWSEQZ · pith_short_8: HUOWHBPE

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/HUOWHBPEHUIWSEQZNSVSH6QUAZ \
  | 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: 3d1d6385e43d116912196cab23fa14064241f5c1fbc2f01fcbaa3eba1a359b22

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "eb42b8d1e8d8d9eb5e28cb8d4e603c18ea1ce9a55ea3a7f00ad722a782f67c28",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2022-04-22T11:22:29Z",
    "title_canon_sha256": "2ca3ebb5028d34d52de96942ac7958eca903799eb57b5d74bfff916058290fb3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.10641",
    "kind": "arxiv",
    "version": 1
  }
}