Pith Number

pith:4HUO5M7P

pith:2019:4HUO5M7PEW6WIZTOD3NVQ2YFNJ

not attested not anchored not stored refs pending

Small and Practical BERT Models for Sequence Labeling

Amelia Archer, Henry Tsai, Jason Riesa, Melvin Johnson, Naveen Arivazhagan, Xin Li

arxiv:1909.00100 v1 · 2019-08-31 · 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{4HUO5M7PEW6WIZTOD3NVQ2YFNJ}

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	2026-07-05T00:01:05.326941Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1e8eeb3ef25bd64666e1edb586b056a60e14ebef26b3a7ed0f46684b2ce0d72

Aliases

arxiv: 1909.00100 · arxiv_version: 1909.00100v1 · doi: 10.48550/arxiv.1909.00100 · pith_short_12: 4HUO5M7PEW6W · pith_short_16: 4HUO5M7PEW6WIZTO · pith_short_8: 4HUO5M7P

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/4HUO5M7PEW6WIZTOD3NVQ2YFNJ \
  | 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: e1e8eeb3ef25bd64666e1edb586b056a60e14ebef26b3a7ed0f46684b2ce0d72

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "33b10908d6e28c67b18329867677127584eb55871468997d78665e205ed2141c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-08-31T00:39:12Z",
    "title_canon_sha256": "5813690ba26490094dd84715ce9c3b3771629552963a08d83b0e6712f117327c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.00100",
    "kind": "arxiv",
    "version": 1
  }
}