Pith. sign in
Pith Number

pith:TBI2YPNP

pith:2023:TBI2YPNPU6DCZA5SF6VZ4IMQON
not attested not anchored not stored refs pending

Progress in Direct Measurements of the Hubble Constant

Barry F. Madore, Wendy L. Freedman

arxiv:2309.05618 v2 · 2023-09-11 · astro-ph.CO

Add to your LaTeX paper
\usepackage{pith}
\pithnumber{TBI2YPNPU6DCZA5SF6VZ4IMQON}

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

3 papers in Pith

Receipt and verification
First computed 2026-07-05T06:51:29.759437Z
Builder pith-number-builder-2026-05-17-v1
Signature Pith Ed25519 (pith-v1-2026-05) · public key
Schema pith-number/v1.0

Canonical hash

9851ac3dafa7862c83b22fab9e2190734d8ea97de41f0fdabc245a56e436635b

Aliases

arxiv: 2309.05618 · arxiv_version: 2309.05618v2 · doi: 10.48550/arxiv.2309.05618 · pith_short_12: TBI2YPNPU6DC · pith_short_16: TBI2YPNPU6DCZA5S · pith_short_8: TBI2YPNP
Agent API
Verify this Pith Number yourself
curl -sH 'Accept: application/ld+json' https://pith.science/pith/TBI2YPNPU6DCZA5SF6VZ4IMQON \
  | 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: 9851ac3dafa7862c83b22fab9e2190734d8ea97de41f0fdabc245a56e436635b
Canonical record JSON
{
  "metadata": {
    "abstract_canon_sha256": "bd8c8de43d0ea1ab44b1bb6381bfb781e8f9f11bd6f82fdef24715dad4b3db0d",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2023-09-11T17:05:49Z",
    "title_canon_sha256": "3fe1c2ceafd37c89ed2a846fcfb238352f3449af82744037897ca8ab4d2dbb53"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2309.05618",
    "kind": "arxiv",
    "version": 2
  }
}