Pith Number

pith:FCTWOIRK

pith:2018:FCTWOIRKSWJ7JLW4EJSHTW64UV

not attested not anchored not stored refs pending

A Verified Timsort C Implementation in Isabelle/HOL

David Sanan, Yongwang Zhao, Yu Zhang

arxiv:1812.03318 v1 · 2018-12-08 · 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{FCTWOIRKSWJ7JLW4EJSHTW64UV}

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	2026-05-17T23:58:46.548825Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

28a767222a9593f4aedc226479dbdca56cd85496d035f52ff5fe9b748b3ff85e

Aliases

arxiv: 1812.03318 · arxiv_version: 1812.03318v1 · doi: 10.48550/arxiv.1812.03318 · pith_short_12: FCTWOIRKSWJ7 · pith_short_16: FCTWOIRKSWJ7JLW4 · pith_short_8: FCTWOIRK

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/FCTWOIRKSWJ7JLW4EJSHTW64UV \
  | 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: 28a767222a9593f4aedc226479dbdca56cd85496d035f52ff5fe9b748b3ff85e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d59e494def6b07812d4015186ccc5422c35414caff2bd91a88d482bfcc099994",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2018-12-08T13:39:09Z",
    "title_canon_sha256": "117acdb26af9525477f05df2bf533fb9a82f65f4fd40b95073ee1799879c8f3c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1812.03318",
    "kind": "arxiv",
    "version": 1
  }
}