Pith Number

pith:UBZHIR5K

pith:2026:UBZHIR5KUSDPVODKNNHXKW7ED3

not attested not anchored not stored refs pending

S$^4$R: Selective Sampling, Subspaces, and Sparse Reconstruction for Compressed Long-Context KV Caching

Jialong Han, Kewei Tu, You Wu

arxiv:2608.00528 v1 · 2026-08-01 · 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{UBZHIR5KUSDPVODKNNHXKW7ED3}

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	2026-08-04T00:37:23.103030Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a0727447aaa486fab86a6b4f755be41ef755cae81a8db2021af2fe15b2159dec

Aliases

arxiv: 2608.00528 · arxiv_version: 2608.00528v1 · doi: 10.48550/arxiv.2608.00528 · pith_short_12: UBZHIR5KUSDP · pith_short_16: UBZHIR5KUSDPVODK · pith_short_8: UBZHIR5K

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/UBZHIR5KUSDPVODKNNHXKW7ED3 \
  | 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: a0727447aaa486fab86a6b4f755be41ef755cae81a8db2021af2fe15b2159dec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "257b2a030b8a59fae8db442c3cd1649462a2d862583231f9f1196f7b699645c2",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CL",
    "submitted_at": "2026-08-01T08:41:29Z",
    "title_canon_sha256": "fe26b9c785ad57d0882898dd882b6452ccd3dad22573d44b00bae9d926d6573c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2608.00528",
    "kind": "arxiv",
    "version": 1
  }
}