Pith Number

pith:FM7D7UXI

pith:2015:FM7D7UXINH3VREA2ZC2XF2WZEP

not attested not anchored not stored refs pending

Needed Computations Shortcutting Needed Steps

Jacob Johannsen, Sergio Antoy, Steven Libby

arxiv:1505.07162 v1 · 2015-05-27 · cs.PL · cs.LO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FM7D7UXINH3VREA2ZC2XF2WZEP}

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	2026-05-18T02:02:07.318394Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b3e3fd2e869f758901ac8b572ead923e5f3161f20884687a660d4a8e2d95558

Aliases

arxiv: 1505.07162 · arxiv_version: 1505.07162v1 · doi: 10.48550/arxiv.1505.07162 · pith_short_12: FM7D7UXINH3V · pith_short_16: FM7D7UXINH3VREA2 · pith_short_8: FM7D7UXI

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/FM7D7UXINH3VREA2ZC2XF2WZEP \
  | 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: 2b3e3fd2e869f758901ac8b572ead923e5f3161f20884687a660d4a8e2d95558

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5d6ca0b276871f704e59ffd6d385ff58c84444acdea0fc022abb6779407ba12f",
    "cross_cats_sorted": [
      "cs.LO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2015-05-27T00:47:50Z",
    "title_canon_sha256": "fabc061b5388216c7d5e233eecccb098d866b06ceba734161b018be637cdf3e3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1505.07162",
    "kind": "arxiv",
    "version": 1
  }
}