Pith Number

pith:FTQSBNF7

pith:2019:FTQSBNF7JPUHLB6ZANXC37NIVK

not attested not anchored not stored refs pending

Reductions for Automated Hypersafety Verification

Anthony Vandikas, Azadeh Farzan

arxiv:1905.09242 v1 · 2019-05-22 · 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{FTQSBNF7JPUHLB6ZANXC37NIVK}

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	2026-05-17T23:45:21.510247Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2ce120b4bf4be87587d9036e2dfda8aaa851e4bac4365f369bd35eedda1db4e3

Aliases

arxiv: 1905.09242 · arxiv_version: 1905.09242v1 · doi: 10.48550/arxiv.1905.09242 · pith_short_12: FTQSBNF7JPUH · pith_short_16: FTQSBNF7JPUHLB6Z · pith_short_8: FTQSBNF7

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/FTQSBNF7JPUHLB6ZANXC37NIVK \
  | 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: 2ce120b4bf4be87587d9036e2dfda8aaa851e4bac4365f369bd35eedda1db4e3

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0d59ef8682862c1a8acd5144076d8bf603cc0d0216ed123c7951b8ce14d971ff",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-05-22T17:01:28Z",
    "title_canon_sha256": "63647d19faddda16b1622bf949cb12f15e3abed465a87d40be36968915998472"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1905.09242",
    "kind": "arxiv",
    "version": 1
  }
}