Pith Number

pith:7NOFQLZT

pith:2021:7NOFQLZTPEHTJUT3G5JSHS6KVN

not attested not anchored not stored refs pending

What Do Developers Discuss about Code Comments?

Mathias Birrer, Mohammad Ghafari, Oscar Nierstrasz, Pooja Rani, Sebastiano Panichella

arxiv:2108.07648 v1 · 2021-08-17 · cs.SE

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7NOFQLZTPEHTJUT3G5JSHS6KVN}

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	2026-07-05T06:03:51.872541Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fb5c582f33790f34d27b375323cbcaab7746c34a2a2bba809131034762a4d137

Aliases

arxiv: 2108.07648 · arxiv_version: 2108.07648v1 · doi: 10.48550/arxiv.2108.07648 · pith_short_12: 7NOFQLZTPEHT · pith_short_16: 7NOFQLZTPEHTJUT3 · pith_short_8: 7NOFQLZT

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/7NOFQLZTPEHTJUT3G5JSHS6KVN \
  | 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: fb5c582f33790f34d27b375323cbcaab7746c34a2a2bba809131034762a4d137

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e5a889f98081dd5e31f45108044e7d54e1716b463c3b0725b5abe5d68e0d1219",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2021-08-17T14:30:35Z",
    "title_canon_sha256": "43524467242d88f271c6d54dccddc4b14e929b1a5e926457c621cfa1e2e7cf33"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2108.07648",
    "kind": "arxiv",
    "version": 1
  }
}