Pith Number

pith:NTOEXY67

pith:2014:NTOEXY67LDB2OQP4XAGJA4GAHD

not attested not anchored not stored refs pending

On the information carried by programs about the objects they compute

Cristobal Rojas, Mathieu Hoyrup

arxiv:1409.6977 v1 · 2014-09-24 · cs.LO · 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{NTOEXY67LDB2OQP4XAGJA4GAHD}

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	2026-05-18T02:42:00.098948Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6cdc4be3df58c3a741fcb80c9070c038cf21f239f42f97f4df6431f6ae2b037f

Aliases

arxiv: 1409.6977 · arxiv_version: 1409.6977v1 · doi: 10.48550/arxiv.1409.6977 · pith_short_12: NTOEXY67LDB2 · pith_short_16: NTOEXY67LDB2OQP4 · pith_short_8: NTOEXY67

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/NTOEXY67LDB2OQP4XAGJA4GAHD \
  | 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: 6cdc4be3df58c3a741fcb80c9070c038cf21f239f42f97f4df6431f6ae2b037f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "130b33734f9064d930e2779b4ccdea67819f1baddfdc5ad6e5925b5faa295609",
    "cross_cats_sorted": [
      "math.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.LO",
    "submitted_at": "2014-09-24T14:47:17Z",
    "title_canon_sha256": "773a87df76bcc0cf0358ab8578d9c279a552be20a3b20d7d16b4bf9096e0ad7d"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1409.6977",
    "kind": "arxiv",
    "version": 1
  }
}