Pith Number

pith:DJWVQ6NV

pith:2021:DJWVQ6NVU4CQYTRWFDIZLQJCBS

not attested not anchored not stored refs pending

Learning Syntax from Naturally-Occurring Bracketings

Igor Malioutov, Lillian Lee, Ozan \.Irsoy, Tianze Shi

arxiv:2104.13933 v1 · 2021-04-28 · cs.CL · cs.AI

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DJWVQ6NVU4CQYTRWFDIZLQJCBS}

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	2026-07-05T02:36:11.351328Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1a6d5879b5a7050c4e3628d195c1220c89eaf1def53f5f3d12a67dc1e5d1ac63

Aliases

arxiv: 2104.13933 · arxiv_version: 2104.13933v1 · doi: 10.48550/arxiv.2104.13933 · pith_short_12: DJWVQ6NVU4CQ · pith_short_16: DJWVQ6NVU4CQYTRW · pith_short_8: DJWVQ6NV

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/DJWVQ6NVU4CQYTRWFDIZLQJCBS \
  | 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: 1a6d5879b5a7050c4e3628d195c1220c89eaf1def53f5f3d12a67dc1e5d1ac63

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8315c325bb85edd0adf01cdb7836b215c6c89d9ad0dc1b6308d04cec06700357",
    "cross_cats_sorted": [
      "cs.AI"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2021-04-28T18:00:02Z",
    "title_canon_sha256": "c108d4490ebf275c5eaa14ae9ab74076616a0577e404acc43b719b02d60373cf"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2104.13933",
    "kind": "arxiv",
    "version": 1
  }
}