Pith Number

pith:TPVHHPEM

pith:2019:TPVHHPEM5VNV3EZ32QHB6XLBVG

not attested not anchored not stored refs pending

Language Model Pre-training for Hierarchical Document Representations

Jacob Devlin, Kenton Lee, Kristina Toutanova, Ming-Wei Chang

arxiv:1901.09128 v1 · 2019-01-26 · 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{TPVHHPEM5VNV3EZ32QHB6XLBVG}

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	2026-05-17T23:55:30.474985Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9bea73bc8ced5b5d933bd40e1f5d61a99782e45f945a9ba8ea55c579d6a17d0c

Aliases

arxiv: 1901.09128 · arxiv_version: 1901.09128v1 · doi: 10.48550/arxiv.1901.09128 · pith_short_12: TPVHHPEM5VNV · pith_short_16: TPVHHPEM5VNV3EZ3 · pith_short_8: TPVHHPEM

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/TPVHHPEM5VNV3EZ32QHB6XLBVG \
  | 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: 9bea73bc8ced5b5d933bd40e1f5d61a99782e45f945a9ba8ea55c579d6a17d0c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc534f56e943821b0b5fa0f8107c81154a184401350195176262c8776d53f6a5",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-01-26T00:35:35Z",
    "title_canon_sha256": "cb763ae99959acdba4ee09c6398ec7f582c2dde1d11b69f534a6d135739a413c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.09128",
    "kind": "arxiv",
    "version": 1
  }
}