Pith Number

pith:BWF6DVEG

pith:2019:BWF6DVEGRB5E7RZQB2HPYSVDG5

not attested not anchored not stored refs pending

Model-independent Distance Calibration and Curvature Measurement using Quasars and Cosmic Chronometers

Fulvio Melia, Jun-Jie Wei

arxiv:1912.00668 v1 · 2019-12-02 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{BWF6DVEGRB5E7RZQB2HPYSVDG5}

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	2026-07-05T00:36:43.904681Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0d8be1d486887a4fc7300e8efc4aa3374550916bafd8172c931e7f541a57863f

Aliases

arxiv: 1912.00668 · arxiv_version: 1912.00668v1 · doi: 10.48550/arxiv.1912.00668 · pith_short_12: BWF6DVEGRB5E · pith_short_16: BWF6DVEGRB5E7RZQ · pith_short_8: BWF6DVEG

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/BWF6DVEGRB5E7RZQB2HPYSVDG5 \
  | 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: 0d8be1d486887a4fc7300e8efc4aa3374550916bafd8172c931e7f541a57863f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "dd5b40fd695d9de959d8be68677f28a43711bdb064a90d0c9105cd6cb45f12ee",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2019-12-02T10:20:54Z",
    "title_canon_sha256": "277a853b3abc04a66031a1997b831d864b36dd653550a449b160b1878bd7cb2e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1912.00668",
    "kind": "arxiv",
    "version": 1
  }
}