Pith Number

pith:LIAQBS5D

pith:2018:LIAQBS5DFH2CZHZHWSRI5W6NCK

not attested not anchored not stored refs pending

Rock bottom, the world, the sky: Catrobat, an extremely large-scale and long-term visual coding project relying purely on smartphones

Bernadette Spieler, Christian Schindler, Kirshan Kumar Luhana, Matthias Mueller, Wolfgang Slany

arxiv:1808.06292 v1 · 2018-08-20 · 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{LIAQBS5DFH2CZHZHWSRI5W6NCK}

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	2026-05-18T00:07:45.437340Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

5a0100cba329f42c9f27b4a28edbcd12abbf7f80cfb6c38acb908eabc65ecab4

Aliases

arxiv: 1808.06292 · arxiv_version: 1808.06292v1 · doi: 10.48550/arxiv.1808.06292 · pith_short_12: LIAQBS5DFH2C · pith_short_16: LIAQBS5DFH2CZHZH · pith_short_8: LIAQBS5D

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/LIAQBS5DFH2CZHZHWSRI5W6NCK \
  | 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: 5a0100cba329f42c9f27b4a28edbcd12abbf7f80cfb6c38acb908eabc65ecab4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "75fa378ef0f1aeda9f3f7366a21dca5d3c84805b54eef5c93d3d066e99a29dac",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-sa/4.0/",
    "primary_cat": "cs.PL",
    "submitted_at": "2018-08-20T03:05:39Z",
    "title_canon_sha256": "0a7709bd3a22be59d99245521fa86f9a3c205e1a2c93ce13feb59ac7aacb8a1c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1808.06292",
    "kind": "arxiv",
    "version": 1
  }
}