Pith Number

pith:I4TDLP5I

pith:2026:I4TDLP5IIWQJEDNJYNU7UEIPRK

not attested not anchored not stored refs pending

T-REX: Fast and Dynamic Journey Planning for Continental-Scale Public Transit Networks

Jonas Sauer, Patrick Steil, Sascha Witt

arxiv:2605.18778 v1 · 2026-04-24 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{I4TDLP5IIWQJEDNJYNU7UEIPRK}

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	2026-05-20T00:06:21.717504Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

472635bfa845a0920da9c369fa110f8a9cc09a9c217735699a4cf0068a5c341e

Aliases

arxiv: 2605.18778 · arxiv_version: 2605.18778v1 · doi: 10.48550/arxiv.2605.18778 · pith_short_12: I4TDLP5IIWQJ · pith_short_16: I4TDLP5IIWQJEDNJ · pith_short_8: I4TDLP5I

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/I4TDLP5IIWQJEDNJYNU7UEIPRK \
  | 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: 472635bfa845a0920da9c369fa110f8a9cc09a9c217735699a4cf0068a5c341e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73d2b75780a6f5d95cc02cad7a6fdf4b1887d0a255193b9edaacc7890a1022f1",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2026-04-24T06:46:53Z",
    "title_canon_sha256": "35850b056855a950664f3a5065c5e8acd19959981237be8d71f80901e956d347"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2605.18778",
    "kind": "arxiv",
    "version": 1
  }
}