Pith Number

pith:PTCLDIAS

pith:2018:PTCLDIAS72K4VLCSYPXUHXDROY

not attested not anchored not stored refs pending

Future Directions for Optimizing Compilers

John Regehr, Nuno P. Lopes

arxiv:1809.02161 v1 · 2018-09-06 · 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{PTCLDIAS72K4VLCSYPXUHXDROY}

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	2026-05-18T00:06:17.804126Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7cc4b1a012fe95caac52c3ef43dc71760184be3ddb610ad7b28bd88300994e1c

Aliases

arxiv: 1809.02161 · arxiv_version: 1809.02161v1 · doi: 10.48550/arxiv.1809.02161 · pith_short_12: PTCLDIAS72K4 · pith_short_16: PTCLDIAS72K4VLCS · pith_short_8: PTCLDIAS

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/PTCLDIAS72K4VLCSYPXUHXDROY \
  | 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: 7cc4b1a012fe95caac52c3ef43dc71760184be3ddb610ad7b28bd88300994e1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8048f1b1cfe88b2a5f6dcd495e0e8b96262f9d781e00fcb9b05e3ff7bc81e74d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-09-06T18:29:54Z",
    "title_canon_sha256": "9d093ba49bd90284addb646749034a7e9b05fa19ce9c778c896dc9c3f8187a38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1809.02161",
    "kind": "arxiv",
    "version": 1
  }
}