Pith Number

pith:U2KQ7C5G

pith:2011:U2KQ7C5GPN4E4WZRXKNORBMI3Y

not attested not anchored not stored refs pending

RTED: A Robust Algorithm for the Tree Edit Distance

Mateusz Pawlik, Nikolaus Augsten

arxiv:1201.0230 v1 · 2011-12-31 · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{U2KQ7C5GPN4E4WZRXKNORBMI3Y}

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	2026-05-18T04:05:25.759977Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a6950f8ba67b784e5b31ba9ae88588de37e6b0e85a06b7d78acc40d6bf4b2c5e

Aliases

arxiv: 1201.0230 · arxiv_version: 1201.0230v1 · doi: 10.48550/arxiv.1201.0230 · pith_short_12: U2KQ7C5GPN4E · pith_short_16: U2KQ7C5GPN4E4WZR · pith_short_8: U2KQ7C5G

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/U2KQ7C5GPN4E4WZRXKNORBMI3Y \
  | 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: a6950f8ba67b784e5b31ba9ae88588de37e6b0e85a06b7d78acc40d6bf4b2c5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fe287274937478c22ef4895214adae3c9524aea8d1d5d07ecc36dd120156c7a4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.DB",
    "submitted_at": "2011-12-31T05:35:26Z",
    "title_canon_sha256": "044749bbd54cda1b6e14c2628163123dc05d49be4778e50f33434585f4562392"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.0230",
    "kind": "arxiv",
    "version": 1
  }
}