Pith Number

pith:DTGVSUGE

pith:2019:DTGVSUGESGB4E4N6VONMFP6YBX

not attested not anchored not stored refs pending

Manipulating the Difficulty of C-Tests

Christian M. Meyer, Erik Schwan, Ji-Ung Lee

arxiv:1906.06905 v2 · 2019-06-17 · 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{DTGVSUGESGB4E4N6VONMFP6YBX}

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	2026-05-17T23:41:41.752256Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1ccd5950c49183c271beab9ac2bfd80dfed44ea0a60eadff867aa2a48b78cc30

Aliases

arxiv: 1906.06905 · arxiv_version: 1906.06905v2 · doi: 10.48550/arxiv.1906.06905 · pith_short_12: DTGVSUGESGB4 · pith_short_16: DTGVSUGESGB4E4N6 · pith_short_8: DTGVSUGE

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/DTGVSUGESGB4E4N6VONMFP6YBX \
  | 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: 1ccd5950c49183c271beab9ac2bfd80dfed44ea0a60eadff867aa2a48b78cc30

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9dd32631633be7d838947d193388322f8a097bced66014fb79d27075a463e25e",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2019-06-17T08:57:38Z",
    "title_canon_sha256": "70964f67613bef2da42a40b29be3475a7c8c7cf32674fecdc95ede879dbd170a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1906.06905",
    "kind": "arxiv",
    "version": 2
  }
}