Pith Number

pith:OY2KP4F5

pith:2021:OY2KP4F5DQJLAE3BCUS7U4PCMA

not attested not anchored not stored refs pending

A Simple yet Brisk and Efficient Active Learning Platform for Text Classification

Glenn Fung, James Kim, Keith Westpfahl, Qian You, Sebastian Seith, Siva Gunda, Teja Kanchinadam

arxiv:2102.00426 v1 · 2021-01-31 · cs.LG · cs.HC · 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{OY2KP4F5DQJLAE3BCUS7U4PCMA}

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	2026-07-05T02:11:11.543435Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7634a7f0bd1c12b013611525fa71e2600a8428d394fa67209d868cb1e05ca1a6

Aliases

arxiv: 2102.00426 · arxiv_version: 2102.00426v1 · doi: 10.48550/arxiv.2102.00426 · pith_short_12: OY2KP4F5DQJL · pith_short_16: OY2KP4F5DQJLAE3B · pith_short_8: OY2KP4F5

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/OY2KP4F5DQJLAE3BCUS7U4PCMA \
  | 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: 7634a7f0bd1c12b013611525fa71e2600a8428d394fa67209d868cb1e05ca1a6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "723770fb8e7c52ef08d95cac04c5198af3a989c16e0aca3452560877e513de22",
    "cross_cats_sorted": [
      "cs.HC",
      "cs.IR"
    ],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.LG",
    "submitted_at": "2021-01-31T10:44:04Z",
    "title_canon_sha256": "82c3aff7765dcdaa7bc17c8cb7e64a6a8da6f082264a63d615d405bd53e64bb8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.00426",
    "kind": "arxiv",
    "version": 1
  }
}