Pith Number

pith:SWTGA7VR

pith:2019:SWTGA7VRURPOL2SBCCTMQG24YH

not attested not anchored not stored refs pending

Which of My Transient Type Checks Are Not (Almost) Free?

Isaac Oscar Gariano, James Noble, Michael Homer, Richard Roberts, Stefan Marr

arxiv:1909.05581 v1 · 2019-09-12 · 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{SWTGA7VRURPOL2SBCCTMQG24YH}

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	2026-07-05T00:04:16.185589Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

95a6607eb1a45ee5ea4110a6c81b5cc1d408cf52c9e01d4a785bafb86c6c41bc

Aliases

arxiv: 1909.05581 · arxiv_version: 1909.05581v1 · doi: 10.48550/arxiv.1909.05581 · pith_short_12: SWTGA7VRURPO · pith_short_16: SWTGA7VRURPOL2SB · pith_short_8: SWTGA7VR

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/SWTGA7VRURPOL2SBCCTMQG24YH \
  | 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: 95a6607eb1a45ee5ea4110a6c81b5cc1d408cf52c9e01d4a785bafb86c6c41bc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e69c6b2ebda1ef8d5536c41b2981f1ee67b01011199fd4697821263a6096fa56",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2019-09-12T11:46:09Z",
    "title_canon_sha256": "3a0a431e2e50d0574274f82b31e7defb356452042f2426de683107d37bc5a568"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.05581",
    "kind": "arxiv",
    "version": 1
  }
}