Pith Number

pith:4TJ4NPTX

pith:2017:4TJ4NPTXB57NIIZW4NVWU7ENKF

not attested not anchored not stored refs pending

Topic Identification for Speech without ASR

Chunxi Liu, Craig Harman, Jan Trmal, Matthew Wiesner, Sanjeev Khudanpur

arxiv:1703.07476 v2 · 2017-03-22 · 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{4TJ4NPTXB57NIIZW4NVWU7ENKF}

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	2026-05-18T00:40:30.405930Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e4d3c6be770f7ed42336e36b6a7c8d51608b787ba5471329f420d891327cdace

Aliases

arxiv: 1703.07476 · arxiv_version: 1703.07476v2 · doi: 10.48550/arxiv.1703.07476 · pith_short_12: 4TJ4NPTXB57N · pith_short_16: 4TJ4NPTXB57NIIZW · pith_short_8: 4TJ4NPTX

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/4TJ4NPTXB57NIIZW4NVWU7ENKF \
  | 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: e4d3c6be770f7ed42336e36b6a7c8d51608b787ba5471329f420d891327cdace

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "45f16afd5fce8646f4b296a894aab958c129ac82f11e1f318c4644038442d1c2",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2017-03-22T00:37:33Z",
    "title_canon_sha256": "d9a6914fd9d23b454ba14ee677a3f9804e233e1aadd7ee2050b1ac2409f38b66"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1703.07476",
    "kind": "arxiv",
    "version": 2
  }
}