Pith Number

pith:4OHO2V5P

pith:2021:4OHO2V5PTFF4SJH5ZAEYMBOAKC

not attested not anchored not stored refs pending

The Age of the Universe with Globular Clusters: Reducing Systematic Uncertainties

Benjamin D. Wandelt, David Valcin, Jose Luis Bernal, Licia Verde, Raul Jimenez

arxiv:2102.04486 v2 · 2021-02-08 · astro-ph.GA · astro-ph.CO · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{4OHO2V5PTFF4SJH5ZAEYMBOAKC}

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	2026-07-05T03:50:13.786989Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e38eed57af994bc924fdc8098605c050a65152be0864d5c77466ea3b091d4b01

Aliases

arxiv: 2102.04486 · arxiv_version: 2102.04486v2 · doi: 10.48550/arxiv.2102.04486 · pith_short_12: 4OHO2V5PTFF4 · pith_short_16: 4OHO2V5PTFF4SJH5 · pith_short_8: 4OHO2V5P

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/4OHO2V5PTFF4SJH5ZAEYMBOAKC \
  | 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: e38eed57af994bc924fdc8098605c050a65152be0864d5c77466ea3b091d4b01

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ad99df33bbccb0239885f2c74e017ad68440d3f9cca878ac810a01894c25c831",
    "cross_cats_sorted": [
      "astro-ph.CO",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-02-08T19:13:06Z",
    "title_canon_sha256": "6aea0d62b3596439173df4a23131033a0d8501e1f462d561c89e3d6437ed3b90"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2102.04486",
    "kind": "arxiv",
    "version": 2
  }
}