Pith Number

pith:ZP7UF3RR

pith:2017:ZP7UF3RR7MHS3O5GDQBXEQYDDX

not attested not anchored not stored refs pending

Constructive Modalities with Provability Smack

Tadeusz Litak

arxiv:1708.05607 v1 · 2017-08-18 · 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{ZP7UF3RR7MHS3O5GDQBXEQYDDX}

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	2026-05-18T00:37:49.529234Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cbff42ee31fb0f2dbba61c037243031dfeafc22bde3e22ed58b44ecf9fcae152

Aliases

arxiv: 1708.05607 · arxiv_version: 1708.05607v1 · doi: 10.48550/arxiv.1708.05607 · pith_short_12: ZP7UF3RR7MHS · pith_short_16: ZP7UF3RR7MHS3O5G · pith_short_8: ZP7UF3RR

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/ZP7UF3RR7MHS3O5GDQBXEQYDDX \
  | 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: cbff42ee31fb0f2dbba61c037243031dfeafc22bde3e22ed58b44ecf9fcae152

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f2d7938af02190c8894f28b877634b09e6f85403cb0f5a6db2b0c96cbdfa5d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2017-08-18T13:42:22Z",
    "title_canon_sha256": "2b6246b23f0caec21a67d105dd392397b57cb69a0dfdac72913684ea2c6b4476"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1708.05607",
    "kind": "arxiv",
    "version": 1
  }
}