Pith Number

pith:IQFDXPX5

pith:2014:IQFDXPX5ZLIEAXRIIHCAO66RN3

not attested not anchored not stored refs pending

A spectroscopic census in young stellar regions: the Sigma Orionis cluster

Alice Perez, Catherine Espaillat, Cesar Brice\~no, Jes\'us Hern\'andez, Lee Hartmann, Lorenzo Olguin, Lori Allen, Maria E. Contreras, Nuria Calvet, Ram\'irez Hernan

arxiv:1408.0225 v2 · 2014-08-01 · 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{IQFDXPX5ZLIEAXRIIHCAO66RN3}

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	2026-05-18T01:42:26.250791Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

440a3bbefdcad0405e2841c4077bd16eea0b9c25977702dd867b2984cad56654

Aliases

arxiv: 1408.0225 · arxiv_version: 1408.0225v2 · doi: 10.48550/arxiv.1408.0225 · pith_short_12: IQFDXPX5ZLIE · pith_short_16: IQFDXPX5ZLIEAXRI · pith_short_8: IQFDXPX5

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/IQFDXPX5ZLIEAXRIIHCAO66RN3 \
  | 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: 440a3bbefdcad0405e2841c4077bd16eea0b9c25977702dd867b2984cad56654

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1a39b538048ec869efdbd749f5ed71fc82c38caac9243a7ce23f34339729d60c",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-08-01T16:34:56Z",
    "title_canon_sha256": "d7512d52199359d91df5664b76d41d42522f995179ddae07d100da3dc226b2f2"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1408.0225",
    "kind": "arxiv",
    "version": 2
  }
}