Pith Number

pith:SGIDDAS6

pith:2023:SGIDDAS6X7SYDKE5X7TVEPIK6O

not attested not anchored not stored refs pending

Robust, privacy-preserving, transparent, and auditable on-device blocklisting

David Kleidermacher, Kurt Thomas, Michael A. Specter, Sarah Meiklejohn, Stephan Somogyi, Xavier Llor\`a, Xiang Wang

arxiv:2304.02810 v1 · 2023-04-06 · cs.CR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SGIDDAS6X7SYDKE5X7TVEPIK6O}

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	2026-07-05T05:58:31.929119Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

919031825ebfe581a89dbfe7523d0af398fe64102a853bb0fda5d50f6465a909

Aliases

arxiv: 2304.02810 · arxiv_version: 2304.02810v1 · doi: 10.48550/arxiv.2304.02810 · pith_short_12: SGIDDAS6X7SY · pith_short_16: SGIDDAS6X7SYDKE5 · pith_short_8: SGIDDAS6

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/SGIDDAS6X7SYDKE5X7TVEPIK6O \
  | 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: 919031825ebfe581a89dbfe7523d0af398fe64102a853bb0fda5d50f6465a909

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cfbdf977bee2bfd20756b993812dbe351e29cb24f62d67d238969df65275fd56",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2023-04-06T01:19:47Z",
    "title_canon_sha256": "bc3d6bb396a5ac1b9db5cff1e799b011693e1c9c9b2aa599843777c60cd1ac83"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2304.02810",
    "kind": "arxiv",
    "version": 1
  }
}