Pith Number

pith:5VC26K2M

pith:2017:5VC26K2MF6LLNC2DNY46NW3IA7

not attested not anchored not stored refs pending

Can string kernels pass the test of time in Native Language Identification?

Marius Popescu, Radu Tudor Ionescu

arxiv:1707.08349 v2 · 2017-07-26 · 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{5VC26K2MF6LLNC2DNY46NW3IA7}

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	2026-05-18T00:38:39.500995Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ed45af2b4c2f96b68b436e39e6db6807f234028e322e501a0c8e61822dcb852b

Aliases

arxiv: 1707.08349 · arxiv_version: 1707.08349v2 · doi: 10.48550/arxiv.1707.08349 · pith_short_12: 5VC26K2MF6LL · pith_short_16: 5VC26K2MF6LLNC2D · pith_short_8: 5VC26K2M

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/5VC26K2MF6LLNC2DNY46NW3IA7 \
  | 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: ed45af2b4c2f96b68b436e39e6db6807f234028e322e501a0c8e61822dcb852b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c47bbbcda0a03ea1971dfbf19164f077a33c52a2b7b062f358f44312c7ad8520",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2017-07-26T10:03:40Z",
    "title_canon_sha256": "9f5ea02680425d5fa6730daf41588ecc5a5eb85b24226c0610bd5b67c87bc5df"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1707.08349",
    "kind": "arxiv",
    "version": 2
  }
}