Pith Number

pith:QFFCP6AT

pith:2021:QFFCP6ATCXI375V5XCYAICZILR

not attested not anchored not stored refs pending

Towards Evidence-based Testability Measurements

Andrea Riboni, Giovanni Denaro, Luca Guglielmo

arxiv:2102.10877 v1 · 2021-02-22 · 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{QFFCP6ATCXI375V5XCYAICZILR}

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	2026-07-05T02:17:02.330639Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

814a27f81315d1bff6bdb8b0040b285c739d4e79fca698c9630968eea98c9e65

Aliases

arxiv: 2102.10877 · arxiv_version: 2102.10877v1 · doi: 10.48550/arxiv.2102.10877 · pith_short_12: QFFCP6ATCXI3 · pith_short_16: QFFCP6ATCXI375V5 · pith_short_8: QFFCP6AT

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/QFFCP6ATCXI375V5XCYAICZILR \
  | 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: 814a27f81315d1bff6bdb8b0040b285c739d4e79fca698c9630968eea98c9e65

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9f6daa7bb5192fab109a97e83a8498d005e7707d3074f6430fe89062f132cd3d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SE",
    "submitted_at": "2021-02-22T10:17:23Z",
    "title_canon_sha256": "93914bd492a28c864c5ef6334dcc0d27bbefa567ab160c1290d9b9e45731a14e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.10877",
    "kind": "arxiv",
    "version": 1
  }
}