Pith Number

pith:O4CMTYK7

pith:2021:O4CMTYK7LBNBDTOETJEVBGXXRO

not attested not anchored not stored refs pending

Pre-training Methods in Information Retrieval

Jia Chen, Jiafeng Guo, Ruqing Zhang, Xiangsheng Li, Xiaohui Xie, Xinyu Ma, Yinqiong Cai, Yixing Fan

arxiv:2111.13853 v3 · 2021-11-27 · 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{O4CMTYK7LBNBDTOETJEVBGXXRO}

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	2026-07-05T04:17:18.697055Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7704c9e15f585a11cdc49a49509af78bad493f5ad5a336ec5322c1b6ecaada7f

Aliases

arxiv: 2111.13853 · arxiv_version: 2111.13853v3 · doi: 10.48550/arxiv.2111.13853 · pith_short_12: O4CMTYK7LBNB · pith_short_16: O4CMTYK7LBNBDTOE · pith_short_8: O4CMTYK7

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/O4CMTYK7LBNBDTOETJEVBGXXRO \
  | 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: 7704c9e15f585a11cdc49a49509af78bad493f5ad5a336ec5322c1b6ecaada7f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b0db8717576655295965075f781b79d94ddc9f6d95bf3849511fa86d7092aa40",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IR",
    "submitted_at": "2021-11-27T09:34:24Z",
    "title_canon_sha256": "afb1847c9b072c21be8114a89247b77d377f3b7f325e590d41298be389da5266"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2111.13853",
    "kind": "arxiv",
    "version": 3
  }
}