Pith Number

pith:MWRWWP3W

pith:2012:MWRWWP3WDXQL4OSX2KQ53WANHK

not attested not anchored not stored refs pending

Probing the anomalous extinction of four young star clusters: the use of colour-excess, main sequence fitting and fractal analysis

A. Hetem Jr, B. Fernandes, J. Gregorio-Hetem

arxiv:1202.6280 v1 · 2012-02-28 · 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{MWRWWP3WDXQL4OSX2KQ53WANHK}

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	2026-05-18T01:58:18.703775Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

65a36b3f761de0be3a57d2a1ddd80d3a89bce4a502e9a91c6bdcda4134950cec

Aliases

arxiv: 1202.6280 · arxiv_version: 1202.6280v1 · doi: 10.48550/arxiv.1202.6280 · pith_short_12: MWRWWP3WDXQL · pith_short_16: MWRWWP3WDXQL4OSX · pith_short_8: MWRWWP3W

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/MWRWWP3WDXQL4OSX2KQ53WANHK \
  | 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: 65a36b3f761de0be3a57d2a1ddd80d3a89bce4a502e9a91c6bdcda4134950cec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4bb77b7e4cc6b9a1c50788f80cf9d48613e6ea98e964fa2f8278a14e0bf1ae92",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2012-02-28T16:51:56Z",
    "title_canon_sha256": "05158b43db79ecb627fd4c61e901da7317d4da875481f6355fcd8538ed97de15"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1202.6280",
    "kind": "arxiv",
    "version": 1
  }
}