Pith Number

pith:OOUEIP4S

pith:2018:OOUEIP4SPFLQP77F4446Y2KBD5

not attested not anchored not stored refs pending

Weights which respect support and NN-decoding

Marcelo Firer, Roberto Assis Machado

arxiv:1804.07809 v2 · 2018-04-20 · cs.IT · math.IT

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OOUEIP4SPFLQP77F4446Y2KBD5}

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	2026-05-17T23:55:59.038337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

73a8443f92795707ffe5e739ec69411f585bc634ed65c32a2dbb2b20f745ec9f

Aliases

arxiv: 1804.07809 · arxiv_version: 1804.07809v2 · doi: 10.48550/arxiv.1804.07809 · pith_short_12: OOUEIP4SPFLQ · pith_short_16: OOUEIP4SPFLQP77F · pith_short_8: OOUEIP4S

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/OOUEIP4SPFLQP77F4446Y2KBD5 \
  | 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: 73a8443f92795707ffe5e739ec69411f585bc634ed65c32a2dbb2b20f745ec9f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0b6eeaf6d9e97f9506ec77365e9d2f72b5a9fd9336b64e7e59f7a16d85ec33c7",
    "cross_cats_sorted": [
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.IT",
    "submitted_at": "2018-04-20T19:57:36Z",
    "title_canon_sha256": "42d1f03967c66fb05666aa64a9ec8e13d4ed1d27632eed1dce1a5a83983b67d9"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.07809",
    "kind": "arxiv",
    "version": 2
  }
}