Pith Number

pith:HCO7H6QS

pith:2026:HCO7H6QSLUU3THQZQG3EGE5P65

not attested not anchored not stored refs pending

Welterweight Go: Boxing, Structural Subtyping, and Generics (Extended Version)

Bernardo Toninho, Julien Lange, Keith Randall, Philip Wadler, Raymond Hu, Robert Griesemer

arxiv:2606.27138 v1 · 2026-06-25 · 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{HCO7H6QSLUU3THQZQG3EGE5P65}

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	2026-06-26T01:16:11.310836Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

389df3fa125d29b99e1981b64313aff75dfa895dede0201548f85b3fb6357f7b

Aliases

arxiv: 2606.27138 · arxiv_version: 2606.27138v1 · doi: 10.48550/arxiv.2606.27138 · pith_short_12: HCO7H6QSLUU3 · pith_short_16: HCO7H6QSLUU3THQZ · pith_short_8: HCO7H6QS

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/HCO7H6QSLUU3THQZQG3EGE5P65 \
  | 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: 389df3fa125d29b99e1981b64313aff75dfa895dede0201548f85b3fb6357f7b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "34040759f374c30e13f9ce9a3b44271ef40e4fd34bf898fd60c9cd59d268b0ea",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2026-06-25T15:13:24Z",
    "title_canon_sha256": "4df02c7a43ef11e430a39f20e9e84e608f626346a741ce0c7bf6898e7836df7c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.27138",
    "kind": "arxiv",
    "version": 1
  }
}