Pith Number

pith:QPNZ4KVX

pith:2025:QPNZ4KVXZYU2GUMEAPKMZQRSJO

not attested not anchored not stored refs pending

The PGPUC horizontal branch evolutionary tracks

A. A. R. Valcarce (UTA), F. Gonzalez-Bordon (UTA), MAS), M. Catelan (PUC-Chile, S. Alves (UTA)

arxiv:2506.16562 v1 · 2025-06-19 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QPNZ4KVXZYU2GUMEAPKMZQRSJO}

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	2026-07-05T11:24:38.450722Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83db9e2ab7ce29a3518403d4ccc2324bac00d11202ca38ce2193b33c5461d057

Aliases

arxiv: 2506.16562 · arxiv_version: 2506.16562v1 · doi: 10.48550/arxiv.2506.16562 · pith_short_12: QPNZ4KVXZYU2 · pith_short_16: QPNZ4KVXZYU2GUME · pith_short_8: QPNZ4KVX

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/QPNZ4KVXZYU2GUMEAPKMZQRSJO \
  | 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: 83db9e2ab7ce29a3518403d4ccc2324bac00d11202ca38ce2193b33c5461d057

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba8c9825904e5ddbbf14454fc675e63938dae9ad300978dcf92f37d315f69ba5",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2025-06-19T19:32:53Z",
    "title_canon_sha256": "a6b7add7f8c6a2a10ae64b313860d005d7dfb2c4e452b0b88b993f7e2ee2eab6"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2506.16562",
    "kind": "arxiv",
    "version": 1
  }
}