Pith Number

pith:WL6UEW2C

pith:2015:WL6UEW2CAKHHB2MHM2NBWKAL5L

not attested not anchored not stored refs pending

Five groups of red giants with distinct chemical composition in the globular cluster NGC 2808

Eugenio Carretta (INAF-Osservatorio Astronomico di Bologna)

arxiv:1507.07553 v1 · 2015-07-27 · 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{WL6UEW2CAKHHB2MHM2NBWKAL5L}

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	2026-05-18T01:32:28.589519Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b2fd425b42028e70e987669a1b280beac8a6fb180a9a017e9d80fa6915a456c2

Aliases

arxiv: 1507.07553 · arxiv_version: 1507.07553v1 · doi: 10.48550/arxiv.1507.07553 · pith_short_12: WL6UEW2CAKHH · pith_short_16: WL6UEW2CAKHHB2MH · pith_short_8: WL6UEW2C

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/WL6UEW2CAKHHB2MHM2NBWKAL5L \
  | 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: b2fd425b42028e70e987669a1b280beac8a6fb180a9a017e9d80fa6915a456c2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2b1197c742384735eaf4a8c7cd89e1b26e7d3765300777999aada87712bc8040",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-07-27T20:00:29Z",
    "title_canon_sha256": "d23126ee305bdabb0c836f52ca583cd743d08599663fb3fa1f309be341984f46"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.07553",
    "kind": "arxiv",
    "version": 1
  }
}