Pith Number

pith:2TQP4WAA

pith:2024:2TQP4WAAT7CKP3A4FQWMKYGGQH

not attested not anchored not stored refs pending

A Tree Sampler for Bounded Context-Free Languages

Breandan Considine

arxiv:2408.01849 v2 · 2024-08-03 · cs.FL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2TQP4WAAT7CKP3A4FQWMKYGGQH}

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	2026-07-05T08:54:36.890671Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d4e0fe58009fc4a7ec1c2c2cc560c681cdf88fd9b6a5333ced970ef6ceff76c5

Aliases

arxiv: 2408.01849 · arxiv_version: 2408.01849v2 · doi: 10.48550/arxiv.2408.01849 · pith_short_12: 2TQP4WAAT7CK · pith_short_16: 2TQP4WAAT7CKP3A4 · pith_short_8: 2TQP4WAA

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/2TQP4WAAT7CKP3A4FQWMKYGGQH \
  | 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: d4e0fe58009fc4a7ec1c2c2cc560c681cdf88fd9b6a5333ced970ef6ceff76c5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "54e5281b9d3e048d49ff391f9cd3ada9f726214c6f46def0e5c8fb1aebc96766",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.FL",
    "submitted_at": "2024-08-03T19:04:09Z",
    "title_canon_sha256": "2fb90ba8baaf9e58270c8458caf4c0c2f87610d5f94f267c831903e33fb0866d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2408.01849",
    "kind": "arxiv",
    "version": 2
  }
}