Pith Number

pith:NAHUQB3B

pith:2021:NAHUQB3B3TTWMIJB5N66EPLYF3

not attested not anchored not stored refs pending

B-PROP: Bootstrapped Pre-training with Representative Words Prediction for Ad-hoc Retrieval

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

arxiv:2104.09791 v4 · 2021-04-20 · 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{NAHUQB3B3TTWMIJB5N66EPLYF3}

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	2026-07-05T04:18:14.537276Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

680f480761dce7662121eb7de23d782ed79efb553521480fd7dd6041d6f1627d

Aliases

arxiv: 2104.09791 · arxiv_version: 2104.09791v4 · doi: 10.48550/arxiv.2104.09791 · pith_short_12: NAHUQB3B3TTW · pith_short_16: NAHUQB3B3TTWMIJB · pith_short_8: NAHUQB3B

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/NAHUQB3B3TTWMIJB5N66EPLYF3 \
  | 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: 680f480761dce7662121eb7de23d782ed79efb553521480fd7dd6041d6f1627d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f92094466b49eeedffc5828787d0f67e37a3e538ad569bfd36287014f37416f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-04-20T07:07:56Z",
    "title_canon_sha256": "eecd2c252736b575faff1a1b7154e32ef87e67a5f96ada88eba3bcb15f1a30b1"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.09791",
    "kind": "arxiv",
    "version": 4
  }
}