Pith Number

pith:DRVGD2HI

pith:2025:DRVGD2HI7O77JJNCNVWZ2HRTBY

not attested not anchored not stored refs pending

Hierarchical Bracketing Encodings Work for Dependency Graphs

Ana Ezquerro, Carlos G\'omez-Rodr\'iguez, David Vilares

arxiv:2509.09388 v1 · 2025-09-11 · 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{DRVGD2HI7O77JJNCNVWZ2HRTBY}

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	2026-07-05T12:09:35.259815Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1c6a61e8e8fbbff4a5a26d6d9d1e330e2dec3e731aed53a17885292c60f332da

Aliases

arxiv: 2509.09388 · arxiv_version: 2509.09388v1 · doi: 10.48550/arxiv.2509.09388 · pith_short_12: DRVGD2HI7O77 · pith_short_16: DRVGD2HI7O77JJNC · pith_short_8: DRVGD2HI

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/DRVGD2HI7O77JJNCNVWZ2HRTBY \
  | 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: 1c6a61e8e8fbbff4a5a26d6d9d1e330e2dec3e731aed53a17885292c60f332da

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f29e71675cc76afde280533c612eb17339ba1201940b5f7c0e4b17e37569522e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2025-09-11T12:08:22Z",
    "title_canon_sha256": "e8a15b8476d0020f2c5fe18821b36b8d68b08477934848ec084507c40bbc8731"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2509.09388",
    "kind": "arxiv",
    "version": 1
  }
}