Pith Number

pith:XCEKZAZX

pith:2011:XCEKZAZXCKECWYHYOUB52DPRRY

not attested not anchored not stored refs pending

Solving the TTC 2011 Reengineering Case with MOLA and Higher-Order Transformations

Agris Sostaks, Audris Kalnins, Edgars Celms, Elina Kalnina, Janis Iraids

arxiv:1111.4750 v1 · 2011-11-21 · cs.PL · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{XCEKZAZXCKECWYHYOUB52DPRRY}

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	2026-05-18T04:07:55.206351Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b888ac833712882b60f87503dd0df18e081022badcca4980e53ad5cfdc10755a

Aliases

arxiv: 1111.4750 · arxiv_version: 1111.4750v1 · doi: 10.48550/arxiv.1111.4750 · pith_short_12: XCEKZAZXCKEC · pith_short_16: XCEKZAZXCKECWYHY · pith_short_8: XCEKZAZX

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/XCEKZAZXCKECWYHYOUB52DPRRY \
  | 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: b888ac833712882b60f87503dd0df18e081022badcca4980e53ad5cfdc10755a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "fb0e5b126ae3bce5c6a631086af5cc6e7cff80c260299b34d16990cbd5096b81",
    "cross_cats_sorted": [
      "cs.SE"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2011-11-21T05:26:06Z",
    "title_canon_sha256": "c60a129a1615290dff8d65116653b2d4ea7faa8a5082e5214fb7f416f79beeaa"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.4750",
    "kind": "arxiv",
    "version": 1
  }
}