Pith Number

pith:N4XYH2RS

pith:2018:N4XYH2RSHRMTAM4N5PMJ2REDJT

not attested not anchored not stored refs pending

Model Selection Using Cosmic Chronometers with Gaussian Processes

Fulvio Melia, Manoj K. Yennapureddy

arxiv:1802.02255 v2 · 2018-02-06 · astro-ph.CO · astro-ph.GA · gr-qc · hep-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{N4XYH2RSHRMTAM4N5PMJ2REDJT}

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	2026-05-18T00:05:19.487946Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6f2f83ea323c5930338debd89d44834cd58f655f1d432e3ebfcfc4836ee0e2b0

Aliases

arxiv: 1802.02255 · arxiv_version: 1802.02255v2 · doi: 10.48550/arxiv.1802.02255 · pith_short_12: N4XYH2RSHRMT · pith_short_16: N4XYH2RSHRMTAM4N · pith_short_8: N4XYH2RS

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/N4XYH2RSHRMTAM4N5PMJ2REDJT \
  | 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: 6f2f83ea323c5930338debd89d44834cd58f655f1d432e3ebfcfc4836ee0e2b0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e46963f03967a09d97d3f54f7d392d9655a26add53a55405113bc43df8d35f15",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "gr-qc",
      "hep-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2018-02-06T23:09:31Z",
    "title_canon_sha256": "134f3174a20e949a094a3aaad6af1fd0b8b440002c703177d95bc3548adfbfe2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1802.02255",
    "kind": "arxiv",
    "version": 2
  }
}