Pith Number

pith:CQ4NWVHS

pith:2013:CQ4NWVHSETQY42SUD2ZERMHUDM

not attested not anchored not stored refs pending

Questions related to Bitcoin and other Informational Money

Jan A. Bergstra, Karl de Leeuw

arxiv:1305.5956 v2 · 2013-05-25 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{CQ4NWVHSETQY42SUD2ZERMHUDM}

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	2026-05-18T03:03:54.747288Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1438db54f224e18e6a541eb248b0f41b0d1e9f04c30362522a464ffe73a14384

Aliases

arxiv: 1305.5956 · arxiv_version: 1305.5956v2 · doi: 10.48550/arxiv.1305.5956 · pith_short_12: CQ4NWVHSETQY · pith_short_16: CQ4NWVHSETQY42SU · pith_short_8: CQ4NWVHS

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/CQ4NWVHSETQY42SUD2ZERMHUDM \
  | 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: 1438db54f224e18e6a541eb248b0f41b0d1e9f04c30362522a464ffe73a14384

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "01f170eec25a8291037c2f079d047c4ac7218618411f6566f4a9ad8ecae7cacc",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2013-05-25T18:58:24Z",
    "title_canon_sha256": "6c9cfae320701882ad5a342b4f0c9a5595b7f15830be5afc85c39ed60c24bde3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1305.5956",
    "kind": "arxiv",
    "version": 2
  }
}