Pith Number

pith:GZAC5E2W

pith:2023:GZAC5E2WMHDSVQO3GZ2MWA5DRZ

not attested not anchored not stored refs pending

Surface Brightness Fluctuations

John P. Blakeslee, Michele Cantiello

arxiv:2307.03116 v2 · 2023-07-06 · 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{GZAC5E2WMHDSVQO3GZ2MWA5DRZ}

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.

Cited by

1 paper in Pith

Two per cent measurement of $H_0$ from Cepheids alone

Receipt and verification

First computed	2026-07-05T07:28:28.731408Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

36402e935661c72ac1db3674cb03a38e7ca47848e46555bd2a49a2259d7b1e38

Aliases

arxiv: 2307.03116 · arxiv_version: 2307.03116v2 · doi: 10.48550/arxiv.2307.03116 · pith_short_12: GZAC5E2WMHDS · pith_short_16: GZAC5E2WMHDSVQO3 · pith_short_8: GZAC5E2W

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/GZAC5E2WMHDSVQO3GZ2MWA5DRZ \
  | 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: 36402e935661c72ac1db3674cb03a38e7ca47848e46555bd2a49a2259d7b1e38

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6bbd9e886ecbe0e39b8e2d772d7be5960840da9311dd733d431d8fb54cb2f73",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-07-06T16:40:48Z",
    "title_canon_sha256": "2c93d91f57ee59e75d501591a6f23c828cd78098b6124c507337efd00031c3a0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2307.03116",
    "kind": "arxiv",
    "version": 2
  }
}