Pith Number

pith:WHAYEZT2

pith:2012:WHAYEZT2OKAW7CHBZPMXPF5CR3

not attested not anchored not stored refs pending

Communication, and concurrency with logic-based restriction inside a calculus of structures

Luca Roversi

arxiv:1212.4669 v1 · 2012-12-19 · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{WHAYEZT2OKAW7CHBZPMXPF5CR3}

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	2026-05-18T03:38:11.789582Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1c182667a72816f88e1cbd97797a28ed2a8739c63fbbc72683021fba5a08a84

Aliases

arxiv: 1212.4669 · arxiv_version: 1212.4669v1 · doi: 10.48550/arxiv.1212.4669 · pith_short_12: WHAYEZT2OKAW · pith_short_16: WHAYEZT2OKAW7CHB · pith_short_8: WHAYEZT2

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/WHAYEZT2OKAW7CHBZPMXPF5CR3 \
  | 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: b1c182667a72816f88e1cbd97797a28ed2a8739c63fbbc72683021fba5a08a84

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "108c8b388b970d92dada0795e8f0959571cf2f545c75b19d37d429bcdbcec25b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2012-12-19T14:31:22Z",
    "title_canon_sha256": "40bd2a8e78058c963bd5f202bc52674bba39143cf11400bbd6fd28ef19adef30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1212.4669",
    "kind": "arxiv",
    "version": 1
  }
}