Pith Number

pith:55TRHX47

pith:2017:55TRHX4745MOLPDY3KPUHX5JAJ

not attested not anchored not stored refs pending

A generalized parsing framework for Abstract Grammars

Chris Bruno, Daniel Harasim, Eva Portelance, Martin Rohrmeier, Timothy J. O'Donnell

arxiv:1710.11301 v3 · 2017-10-31 · cs.CL · 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{55TRHX4745MOLPDY3KPUHX5JAJ}

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	2026-05-18T00:25:33.646552Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

ef6713df9fe758e5bc78da9f43dfa9027ef7201613fd2474415c0e247209ab2b

Aliases

arxiv: 1710.11301 · arxiv_version: 1710.11301v3 · doi: 10.48550/arxiv.1710.11301 · pith_short_12: 55TRHX4745MO · pith_short_16: 55TRHX4745MOLPDY · pith_short_8: 55TRHX47

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/55TRHX4745MOLPDY3KPUHX5JAJ \
  | 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: ef6713df9fe758e5bc78da9f43dfa9027ef7201613fd2474415c0e247209ab2b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "671ea595050be8ab477c9c6f5ae0ba98216a9ab1580f2f29f80972268806ba11",
    "cross_cats_sorted": [
      "cs.FL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2017-10-31T02:23:15Z",
    "title_canon_sha256": "78fac562902a0d842fdad06d4bb6d17d4d16794e41eb067f0f57facd98e06862"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1710.11301",
    "kind": "arxiv",
    "version": 3
  }
}