Pith Number

pith:HHLI6OO5

pith:2019:HHLI6OO5H3ZYLEODZERM7W6G2J

not attested not anchored not stored refs pending

A robust graph-based approach to observational equivalence

Dan R. Ghica, Koko Muroya, Todd Waugh Ambridge

arxiv:1907.01257 v5 · 2019-07-02 · 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{HHLI6OO5H3ZYLEODZERM7W6G2J}

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.

Cited by

1 paper in Pith

The far side of the cube

Receipt and verification

First computed	2026-07-05T10:55:14.245336Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39d68f39dd3ef38591c3c922cfdbc6d26cd0c619e0274809e783433c59a3cb1e

Aliases

arxiv: 1907.01257 · arxiv_version: 1907.01257v5 · doi: 10.48550/arxiv.1907.01257 · pith_short_12: HHLI6OO5H3ZY · pith_short_16: HHLI6OO5H3ZYLEOD · pith_short_8: HHLI6OO5

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/HHLI6OO5H3ZYLEODZERM7W6G2J \
  | 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: 39d68f39dd3ef38591c3c922cfdbc6d26cd0c619e0274809e783433c59a3cb1e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "794459e8db350128aab12131c5031837211ed8b4c1954fe382e54a9b528bd9c4",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-07-02T09:34:59Z",
    "title_canon_sha256": "f809457fb613ecd7c9fb37d0e35a0b63043befaf5d1c0447467ee25b2d1450e2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.01257",
    "kind": "arxiv",
    "version": 5
  }
}