Pith Number

pith:47JHH5ZR

pith:2021:47JHH5ZRDM2S7DFNZC32IRGPEO

not attested not anchored not stored refs pending

Preregistering NLP Research

Chris van der Lee, Emiel Krahmer, Emiel van Miltenburg

arxiv:2103.06944 v2 · 2021-03-11 · 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{47JHH5ZRDM2S7DFNZC32IRGPEO}

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	2026-07-05T02:25:51.341984Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e7d273f7311b352f8cadc8b7a444cf23b9830d68fea5d7b816f73d5a1711525a

Aliases

arxiv: 2103.06944 · arxiv_version: 2103.06944v2 · doi: 10.48550/arxiv.2103.06944 · pith_short_12: 47JHH5ZRDM2S · pith_short_16: 47JHH5ZRDM2S7DFN · pith_short_8: 47JHH5ZR

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/47JHH5ZRDM2S7DFNZC32IRGPEO \
  | 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: e7d273f7311b352f8cadc8b7a444cf23b9830d68fea5d7b816f73d5a1711525a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e37d9ada0e790c298f0c461f3e7d3d1827236b0315a4f91b4bd64eee7b198e28",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-03-11T20:44:31Z",
    "title_canon_sha256": "47326e2a03551e78e43a044681b30f030154c70acd4389dca620701972972395"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.06944",
    "kind": "arxiv",
    "version": 2
  }
}