Pith Number

pith:GCVZJHM7

pith:2015:GCVZJHM7AQENMXLUNCIR7NEPPD

not attested not anchored not stored refs pending

TryLogic tutorial: an approach to Learning Logic by proving and refuting

Jo\~ao Marcos, Patrick Terrematte

arxiv:1507.03685 v1 · 2015-07-14 · cs.CY · 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{GCVZJHM7AQENMXLUNCIR7NEPPD}

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	2026-05-18T01:36:57.569841Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

30ab949d9f0408d65d7468911fb48f78cb5132640ad533e5b53775e4f93bb238

Aliases

arxiv: 1507.03685 · arxiv_version: 1507.03685v1 · doi: 10.48550/arxiv.1507.03685 · pith_short_12: GCVZJHM7AQEN · pith_short_16: GCVZJHM7AQENMXLU · pith_short_8: GCVZJHM7

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/GCVZJHM7AQENMXLUNCIR7NEPPD \
  | 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: 30ab949d9f0408d65d7468911fb48f78cb5132640ad533e5b53775e4f93bb238

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4e8e32aed2a4115111c260ae839810408fd5dda387332d2461de6c157b8798c9",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2015-07-14T00:52:43Z",
    "title_canon_sha256": "7c1e7aee9229925da8ad346b694833e00d6102c63caf7c0a4a6b1aa22a92d1e8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.03685",
    "kind": "arxiv",
    "version": 1
  }
}