Pith Number

pith:KDJEXHL5

pith:2025:KDJEXHL5GCTHYM6N43DYF6LJS6

not attested not anchored not stored refs pending

On the ages of the stellar populations of galaxies at $z=0.1$-7

Eric E. Mart\'inez-Garc\'ia

arxiv:2507.03075 v1 · 2025-07-03 · astro-ph.GA · 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{KDJEXHL5GCTHYM6N43DYF6LJS6}

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	2026-07-05T11:31:52.202441Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

50d24b9d7d30a67c33cde6c782f96997932aacba6de4e395a165be3006318e52

Aliases

arxiv: 2507.03075 · arxiv_version: 2507.03075v1 · doi: 10.48550/arxiv.2507.03075 · pith_short_12: KDJEXHL5GCTH · pith_short_16: KDJEXHL5GCTHYM6N · pith_short_8: KDJEXHL5

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/KDJEXHL5GCTHYM6N43DYF6LJS6 \
  | 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: 50d24b9d7d30a67c33cde6c782f96997932aacba6de4e395a165be3006318e52

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "98e32c60f83a9351259fee7d2d6b8a7d79555057487ae56853e7c197084298f6",
    "cross_cats_sorted": [
      "astro-ph.CO"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2025-07-03T18:00:03Z",
    "title_canon_sha256": "8d1cf1759cf4933ce661dc04e6ed5a5173dbb242fc10eb1bd706e15d72d95821"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2507.03075",
    "kind": "arxiv",
    "version": 1
  }
}