Pith Number

pith:PLJK3BAB

pith:2017:PLJK3BABOWAE2UQHU7R5VIIFIZ

not attested not anchored not stored refs pending

Divide-and-Conquer Checkpointing for Arbitrary Programs with No User Annotation

Barak A. Pearlmutter, Jeffrey Mark Siskind

arxiv:1708.06799 v2 · 2017-08-22 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PLJK3BABOWAE2UQHU7R5VIIFIZ}

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	2026-05-18T00:10:39.204379Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7ad2ad840175804d5207a7e3daa105465995dd135027f1cac0b421a65c4ec92f

Aliases

arxiv: 1708.06799 · arxiv_version: 1708.06799v2 · doi: 10.48550/arxiv.1708.06799 · pith_short_12: PLJK3BABOWAE · pith_short_16: PLJK3BABOWAE2UQH · pith_short_8: PLJK3BAB

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/PLJK3BABOWAE2UQHU7R5VIIFIZ \
  | 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: 7ad2ad840175804d5207a7e3daa105465995dd135027f1cac0b421a65c4ec92f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "aa798e7496ea764f7d4516e6897e15349c204338d05de0332941b6e135d38140",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2017-08-22T20:00:41Z",
    "title_canon_sha256": "5572715273596486241d0f778fc15e9a54f0ff3b60cf488bc87cdf69424e2403"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.06799",
    "kind": "arxiv",
    "version": 2
  }
}