Pith Number

pith:OAXHCLYG

pith:2021:OAXHCLYGAQQLVPKY7GKR3MHKZB

not attested not anchored not stored refs pending

PEQcheck: Localized and Context-aware Checking of Functional Equivalence (Technical Report)

Marie-Christine Jakobs

arxiv:2101.09042 v2 · 2021-01-22 · cs.LO · 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{OAXHCLYGAQQLVPKY7GKR3MHKZB}

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	2026-07-05T02:25:36.108568Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

702e712f060420babd58f9951db0eac8705b0d44824c8134e316b7f353cb06c9

Aliases

arxiv: 2101.09042 · arxiv_version: 2101.09042v2 · doi: 10.48550/arxiv.2101.09042 · pith_short_12: OAXHCLYGAQQL · pith_short_16: OAXHCLYGAQQLVPKY · pith_short_8: OAXHCLYG

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/OAXHCLYGAQQLVPKY7GKR3MHKZB \
  | 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: 702e712f060420babd58f9951db0eac8705b0d44824c8134e316b7f353cb06c9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "de52f6bd2069070c1cffc837decfad38276253489bd620149bb4738f66eed579",
    "cross_cats_sorted": [
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2021-01-22T10:29:41Z",
    "title_canon_sha256": "4658b7b4e5fb5f712f3b9ff1a8c565af78949e2cecee0bba352321b1b78d13b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.09042",
    "kind": "arxiv",
    "version": 2
  }
}