Pith Number

pith:XMHQNBQS

pith:2018:XMHQNBQSBOW2IRCIRU45GZYC5D

not attested not anchored not stored refs pending

Unique Solutions of Contractions, CCS, and their HOL Formalisation

Chun Tian (Fondazione Bruno Kessler, Davide Sangiorgi (Universit\`a di Bologna, Inria, Italy)

arxiv:1808.08652 v1 · 2018-08-27 · 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{XMHQNBQSBOW2IRCIRU45GZYC5D}

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	2026-05-18T00:07:13.687251Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bb0f0686120bada444488d39d36702e8da0b83649a2417c627fc70beca609b08

Aliases

arxiv: 1808.08652 · arxiv_version: 1808.08652v1 · doi: 10.48550/arxiv.1808.08652 · pith_short_12: XMHQNBQSBOW2 · pith_short_16: XMHQNBQSBOW2IRCI · pith_short_8: XMHQNBQS

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/XMHQNBQSBOW2IRCIRU45GZYC5D \
  | 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: bb0f0686120bada444488d39d36702e8da0b83649a2417c627fc70beca609b08

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "08ba165817ee037edf907434d4518aacecc5466b07b0905817a3019fcab2c9d9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2018-08-27T01:20:45Z",
    "title_canon_sha256": "f79691da3006ac8f98f158d180b534a1e50160fd4681b343dd07219d8453a9a6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.08652",
    "kind": "arxiv",
    "version": 1
  }
}