Pith Number

pith:F2HR6A5Z

pith:2019:F2HR6A5ZAY6KX2XS4HAUPZINOK

not attested not anchored not stored refs pending

Strand Spaces with Choice via a Process Algebra Semantics

Catherine Meadows, Fan Yang, Jos\'e Meseguer, Santiago Escobar

arxiv:1904.09946 v1 · 2019-04-22 · cs.CR · 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{F2HR6A5ZAY6KX2XS4HAUPZINOK}

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	2026-05-17T23:48:02.790085Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2e8f1f03b9063cabeaf2e1c147e50d72b45e61669966da5ef347499fb6dacfa2

Aliases

arxiv: 1904.09946 · arxiv_version: 1904.09946v1 · doi: 10.48550/arxiv.1904.09946 · pith_short_12: F2HR6A5ZAY6K · pith_short_16: F2HR6A5ZAY6KX2XS · pith_short_8: F2HR6A5Z

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/F2HR6A5ZAY6KX2XS4HAUPZINOK \
  | 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: 2e8f1f03b9063cabeaf2e1c147e50d72b45e61669966da5ef347499fb6dacfa2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ed8a5a6d2a8dcc0fedac8077ed197fa537b194cba8fcd69dd5ea6c94db205966",
    "cross_cats_sorted": [
      "cs.LO",
      "cs.PL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2019-04-22T16:46:03Z",
    "title_canon_sha256": "86a59652f90bfce94872d4982fabf143ee7e687af3aa4ff3616e7cb46cb36e9b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1904.09946",
    "kind": "arxiv",
    "version": 1
  }
}