Pith Number

pith:AQ45VEQJ

pith:2021:AQ45VEQJUVAOB4WX7V4VPANVHP

not attested not anchored not stored refs pending

BPF for storage: an exokernel-inspired approach

Amy Tai, Asaf Cidon, Hongyi Wang, Junfeng Yang, Ryan Stutsman, Yuhong Zhong, Yu Jian Wu

arxiv:2102.12922 v1 · 2021-02-25 · cs.OS · cs.DB

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{AQ45VEQJUVAOB4WX7V4VPANVHP}

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	2026-07-05T02:18:24.924436Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0439da9209a540e0f2d7fd795781b53bce0948487c331d74e5c1e62502c08744

Aliases

arxiv: 2102.12922 · arxiv_version: 2102.12922v1 · doi: 10.48550/arxiv.2102.12922 · pith_short_12: AQ45VEQJUVAO · pith_short_16: AQ45VEQJUVAOB4WX · pith_short_8: AQ45VEQJ

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/AQ45VEQJUVAOB4WX7V4VPANVHP \
  | 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: 0439da9209a540e0f2d7fd795781b53bce0948487c331d74e5c1e62502c08744

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d4f14bcdbd3cddcca6f1ee894abfdc799f10438da411a18d0874767098d96331",
    "cross_cats_sorted": [
      "cs.DB"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.OS",
    "submitted_at": "2021-02-25T15:22:38Z",
    "title_canon_sha256": "49ebcb428f09e4d4c4daa4e6229fabcc4e5e39e09182e1ccced57e41907cd404"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.12922",
    "kind": "arxiv",
    "version": 1
  }
}