Pith Number

pith:J7YWXTON

pith:2018:J7YWXTONNZ3EWMQNUUBKRCCIFJ

not attested not anchored not stored refs pending

A High-Precision Trigonometric Parallax to an Ancient Metal-Poor Globular Cluster

A. Riess, D.A. Vandenberg, D.R. Soderblom, J. Kalirai, J. Strader, R. Salinas, S. Casertano, T.M. Brown

arxiv:1803.02927 v2 · 2018-03-08 · astro-ph.SR · astro-ph.GA · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{J7YWXTONNZ3EWMQNUUBKRCCIFJ}

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	2026-05-18T00:19:20.428448Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

4ff16bcdcd6e764b320da502a888482a6057b19d7e31d2378a67cdae3697ea92

Aliases

arxiv: 1803.02927 · arxiv_version: 1803.02927v2 · doi: 10.48550/arxiv.1803.02927 · pith_short_12: J7YWXTONNZ3E · pith_short_16: J7YWXTONNZ3EWMQN · pith_short_8: J7YWXTON

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/J7YWXTONNZ3EWMQNUUBKRCCIFJ \
  | 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: 4ff16bcdcd6e764b320da502a888482a6057b19d7e31d2378a67cdae3697ea92

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "82a092889a718e6219ce7a4ad7d00a7793e4c32410d2e37aea231dc2e6eba170",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-03-08T01:00:58Z",
    "title_canon_sha256": "d14886d278806213b5d061c30513b5e6e47f0b095de1bff5e09b65e23d91493a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.02927",
    "kind": "arxiv",
    "version": 2
  }
}