Pith Number

pith:4HNUTXKE

pith:2015:4HNUTXKECFXRIXXHWRMEGJUCII

not attested not anchored not stored refs pending

Multiple stellar populations in Magellanic Cloud clusters. III. The first evidence of an extended main sequence turn-off in a young cluster: NGC1856

A. Aparicio, A. Bellini, A. F. Marino, A. Pietrinferni, A. P. Milone, G. Piotto, H. Jerjen, L. R. Bedin, R. M. Rich, S. Cassisi

arxiv:1504.03252 v1 · 2015-04-13 · 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{4HNUTXKECFXRIXXHWRMEGJUCII}

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	2026-05-18T02:03:32.899220Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e1db49dd44116f145ee7b4584326824213fad5a04412fccd34f6170e30c3b689

Aliases

arxiv: 1504.03252 · arxiv_version: 1504.03252v1 · doi: 10.48550/arxiv.1504.03252 · pith_short_12: 4HNUTXKECFXR · pith_short_16: 4HNUTXKECFXRIXXH · pith_short_8: 4HNUTXKE

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/4HNUTXKECFXRIXXHWRMEGJUCII \
  | 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: e1db49dd44116f145ee7b4584326824213fad5a04412fccd34f6170e30c3b689

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "9274f1354077c56e534a163e216645d5688e5b78da6c75b5a7b10c623d220143",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-04-13T16:46:20Z",
    "title_canon_sha256": "f68aaa92ea26a5bf79a628d10dd50fc9fd778240a9fb65beb48d069c635b8d10"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.03252",
    "kind": "arxiv",
    "version": 1
  }
}