Pith Number

pith:OQSONFHI

pith:2026:OQSONFHIXX4WUDKPFMLJWMKLHA

not attested not anchored not stored refs pending

Compute Globally, Materialize Locally: The Memory Contract of Sparse Event-KV

Zefeng Cai, Zerui Cai

arxiv:2607.23693 v1 · 2026-07-26 · cs.AI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OQSONFHIXX4WUDKPFMLJWMKLHA}

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	2026-07-28T01:23:06.051114Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7424e694e8bdf96a0d4f2b169b314b381a764f01b45971b28d3e431a7db84f6d

Aliases

arxiv: 2607.23693 · arxiv_version: 2607.23693v1 · doi: 10.48550/arxiv.2607.23693 · pith_short_12: OQSONFHIXX4W · pith_short_16: OQSONFHIXX4WUDKP · pith_short_8: OQSONFHI

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/OQSONFHIXX4WUDKPFMLJWMKLHA \
  | 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: 7424e694e8bdf96a0d4f2b169b314b381a764f01b45971b28d3e431a7db84f6d

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4985d875123dd6382fefc8e6131cc56bb353d7953106bd5a72a0c6fafefe4c4e",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-07-26T14:37:53Z",
    "title_canon_sha256": "341e8cc9f0ec4c6c58411c7da18380dc844b6e8eea9ef3c8887ac6777fc4ce25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.23693",
    "kind": "arxiv",
    "version": 1
  }
}