Pith Number

pith:ZKUOWECP

pith:2020:ZKUOWECPKLG2S2RX42T25BEFN4

not attested not anchored not stored refs pending

Inferring the Age of the Universe with Globular Clusters

Benjamin D. Wandelt, David Valcin, Jos\'e Luis Bernal, Licia Verde, Raul Jimenez

arxiv:2007.06594 v2 · 2020-07-13 · astro-ph.CO · astro-ph.GA · 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{ZKUOWECPKLG2S2RX42T25BEFN4}

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

2 papers in Pith

Challenges for $\Lambda$CDM: An update

New Way to Date Globular Clusters: Brown Dwarf Cooling Sequences

Receipt and verification

First computed	2026-07-05T03:50:12.954052Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

caa8eb104f52cda96a37e6a7ae84856f3cd6653bdedcc37ee7e9243afae7f55f

Aliases

arxiv: 2007.06594 · arxiv_version: 2007.06594v2 · doi: 10.48550/arxiv.2007.06594 · pith_short_12: ZKUOWECPKLG2 · pith_short_16: ZKUOWECPKLG2S2RX · pith_short_8: ZKUOWECP

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/ZKUOWECPKLG2S2RX42T25BEFN4 \
  | 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: caa8eb104f52cda96a37e6a7ae84856f3cd6653bdedcc37ee7e9243afae7f55f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6f2ce8b8daf7365353b046a83f47d3a9b14122afcded0b4a862840a33383fc0",
    "cross_cats_sorted": [
      "astro-ph.GA",
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2020-07-13T18:00:55Z",
    "title_canon_sha256": "eb3c961d9f782246d960af8acc144dcea79ab74c0978c1b65b56f819a16b0934"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2007.06594",
    "kind": "arxiv",
    "version": 2
  }
}