Pith Number

pith:AFM4RFQH

pith:2026:AFM4RFQHSALR5POEHBHLLAM4M3

not attested not anchored not stored refs pending

The Unicity Execution Layer

Ahto Buldas, Ahto Truu, Dirk Draheim, Mike Gault, Risto Laanoja, Vladimir Rogojin

arxiv:2606.02181 v1 · 2026-06-01 · 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{AFM4RFQHSALR5POEHBHLLAM4M3}

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	2026-06-02T03:04:52.554353Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0159c8960790171ebdc4384eb5819c66fe3aef7279e8640af09d4f9ed44a6dfc

Aliases

arxiv: 2606.02181 · arxiv_version: 2606.02181v1 · doi: 10.48550/arxiv.2606.02181 · pith_short_12: AFM4RFQHSALR · pith_short_16: AFM4RFQHSALR5POE · pith_short_8: AFM4RFQH

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/AFM4RFQHSALR5POEHBHLLAM4M3 \
  | 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: 0159c8960790171ebdc4384eb5819c66fe3aef7279e8640af09d4f9ed44a6dfc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "bc34762890e39108f57b7238d11ce886b432ca37e51e389c992c03d4acf9ddd3",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-nd/4.0/",
    "primary_cat": "cs.CR",
    "submitted_at": "2026-06-01T12:37:31Z",
    "title_canon_sha256": "42efd19271ff651e150752eb4b3e7f1a1650bc3659817696b1c1e5152834d2f6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.02181",
    "kind": "arxiv",
    "version": 1
  }
}