Pith Number

pith:QVK5EKOP

pith:2026:QVK5EKOPIZIHMFIS7ZE4GITX5O

not attested not anchored not stored refs pending

Spectral-LSH: Sub-Quadratic Prompt Compression via Krylov-Projected Locality-Sensitive Hashing

Ali Mahdavi, Amirfarhad Farhadi, Azaseh Zamanifar, Omid Kashefi

arxiv:2607.19368 v1 · 2026-06-12 · cs.AI · cs.CL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QVK5EKOPIZIHMFIS7ZE4GITX5O}

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	2026-07-23T00:23:45.177970Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8555d229cf4650761512fe49c32277eb9736070fe8aa2f7c626747e4b6c41eec

Aliases

arxiv: 2607.19368 · arxiv_version: 2607.19368v1 · doi: 10.48550/arxiv.2607.19368 · pith_short_12: QVK5EKOPIZIH · pith_short_16: QVK5EKOPIZIHMFIS · pith_short_8: QVK5EKOP

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/QVK5EKOPIZIHMFIS7ZE4GITX5O \
  | 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: 8555d229cf4650761512fe49c32277eb9736070fe8aa2f7c626747e4b6c41eec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "658a6d5c20ceed63b28502229feee501ee2026af5c230d6162971366578f0e12",
    "cross_cats_sorted": [
      "cs.CL"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2026-06-12T01:11:17Z",
    "title_canon_sha256": "2167690307be7bcee0bc85e21da3a6997b6bb1782ee9df3db9f14f2f89d85a0b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.19368",
    "kind": "arxiv",
    "version": 1
  }
}