Pith Number

pith:CPFXO2ZK

pith:2019:CPFXO2ZKBIRSZ52O7GXXFJ6ZBF

not attested not anchored not stored refs pending

CFO: A Framework for Building Production NLP Systems

Andrzej Sakrajda, Anthony Ferritto, Avirup Sil, Cezar Pendus, J. William Murdock, Lin Pan, Michael Glass, Radu Florian, Rishav Chakravarti, Salim Roukos, Vittorio Castelli

arxiv:1908.06121 v3 · 2019-08-16 · cs.CL · 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{CPFXO2ZKBIRSZ52O7GXXFJ6ZBF}

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	2026-07-05T01:11:41.302035Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

13cb776b2a0a232cf74ef9af72a7d90962c033bb870843056c813f5903bcb823

Aliases

arxiv: 1908.06121 · arxiv_version: 1908.06121v3 · doi: 10.48550/arxiv.1908.06121 · pith_short_12: CPFXO2ZKBIRS · pith_short_16: CPFXO2ZKBIRSZ52O · pith_short_8: CPFXO2ZK

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/CPFXO2ZKBIRSZ52O7GXXFJ6ZBF \
  | 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: 13cb776b2a0a232cf74ef9af72a7d90962c033bb870843056c813f5903bcb823

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6652928e8037b9c1b6ae1b60e48fb91c3eecf3c271cc1d67330ac235d44bc91a",
    "cross_cats_sorted": [
      "cs.IR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-08-16T18:19:59Z",
    "title_canon_sha256": "4691daad68cbdff9a8a72028b04326990c524e866ac292e4629ad370b8892497"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1908.06121",
    "kind": "arxiv",
    "version": 3
  }
}