Pith Number

pith:WLLIWJQV

pith:2018:WLLIWJQVTUF5WNZX4ZZBUCTGXK

not attested not anchored not stored refs pending

Ages of the Bulge globular clusters NGC 6522 and NGC 6626 (M28) from HST Proper-motion-cleaned Color-Magnitude Diagrams

B. Barbuy, D. Nardiello, E. Bica, L. O. Kerber, M. Libralato, R. G. Vieira, S. Cassisi, S. Ortolani

arxiv:1801.03876 v1 · 2018-01-11 · 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{WLLIWJQVTUF5WNZX4ZZBUCTGXK}

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	2026-05-18T00:24:47.022208Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2d68b26159d0bdb3737e6721a0a66baa2976f9a535f27b2a62d828aefa6f454

Aliases

arxiv: 1801.03876 · arxiv_version: 1801.03876v1 · doi: 10.48550/arxiv.1801.03876 · pith_short_12: WLLIWJQVTUF5 · pith_short_16: WLLIWJQVTUF5WNZX · pith_short_8: WLLIWJQV

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/WLLIWJQVTUF5WNZX4ZZBUCTGXK \
  | 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: b2d68b26159d0bdb3737e6721a0a66baa2976f9a535f27b2a62d828aefa6f454

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c39586074e1bedb456e35320610552e45b4ccb8d169fa27ebc4169b32d9d7d9",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-01-11T17:11:22Z",
    "title_canon_sha256": "02b1341e3beb12d8a4995bb5b2372a9a2539fdd38f0b7d975402c4301e002ec3"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1801.03876",
    "kind": "arxiv",
    "version": 1
  }
}