Pith Number

pith:64ZAPVXR

pith:2019:64ZAPVXRUQD43KGEI4BISNNPRA

not attested not anchored not stored refs pending

Time-Stamped Claim Logic

Cristina Sernadas, Erisa Karafili, Jo\~ao Rasga, Luca Vigan\`o

arxiv:1907.06541 v2 · 2019-07-15 · cs.LO · cs.CR · math.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{64ZAPVXRUQD43KGEI4BISNNPRA}

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	2026-05-17T23:40:22.964705Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f73207d6f1a407cda8c447028935af883efe9cb63be38afbf78174fc32b425a7

Aliases

arxiv: 1907.06541 · arxiv_version: 1907.06541v2 · doi: 10.48550/arxiv.1907.06541 · pith_short_12: 64ZAPVXRUQD4 · pith_short_16: 64ZAPVXRUQD43KGE · pith_short_8: 64ZAPVXR

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/64ZAPVXRUQD43KGEI4BISNNPRA \
  | 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: f73207d6f1a407cda8c447028935af883efe9cb63be38afbf78174fc32b425a7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ff2f0bbcfd460772365c423841b089454a2831a0119b3517333a72a7befba450",
    "cross_cats_sorted": [
      "cs.CR",
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2019-07-15T15:10:29Z",
    "title_canon_sha256": "adc31527a842ee940443b32a80f1f7a47949ee126d020f911def3a5130d51662"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1907.06541",
    "kind": "arxiv",
    "version": 2
  }
}