Pith Number

pith:OGX4XFIB

pith:2018:OGX4XFIB4XP5JW3BIGEGFQI247

not attested not anchored not stored refs pending

Borrowing Safe Pointers from Rust in SPARK

Andrei Paskevich, Georges-Axel Jaloyan, Yannick Moy

arxiv:1805.05576 v1 · 2018-05-15 · cs.PL

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{OGX4XFIB4XP5JW3BIGEGFQI247}

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	2026-05-18T00:16:00.126734Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

71afcb9501e5dfd4db61418862c11ae7e61b318597340c8df94d86095566c7e5

Aliases

arxiv: 1805.05576 · arxiv_version: 1805.05576v1 · doi: 10.48550/arxiv.1805.05576 · pith_short_12: OGX4XFIB4XP5 · pith_short_16: OGX4XFIB4XP5JW3B · pith_short_8: OGX4XFIB

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/OGX4XFIB4XP5JW3BIGEGFQI247 \
  | 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: 71afcb9501e5dfd4db61418862c11ae7e61b318597340c8df94d86095566c7e5

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5b6be7d45ef8af85f67dc5269bba9b15de2aadce9d6e4f1c88957c7b6152ad02",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-05-15T05:58:50Z",
    "title_canon_sha256": "0dab967140a07b4e3dfcd1c1512ec5af759c4818695f19456fb0c5f8d4f76c7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1805.05576",
    "kind": "arxiv",
    "version": 1
  }
}