Pith Number

pith:FEPQQFCO

pith:2015:FEPQQFCOCCFLSTIPYO4WQK3XJS

not attested not anchored not stored refs pending

The Spatial Structure of Young Stellar Clusters. II. Total Young Stellar Populations

2, (2) Universidad de Valpara\'iso, 3), (3) Millennium Institute of Astrophysics), Eric D. Feigelson (1) ((1) Penn State University, Konstantin V. Getman (1), Michael A. Kuhn (1

arxiv:1501.05300 v1 · 2015-01-21 · astro-ph.GA · astro-ph.SR

Open paper page JSON Open Graph Bundle Merged state What is a Pith Number?

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	2026-05-18T01:41:09.530106Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

291f08144e108ab94d0fc3b9682b774c81e26eed8a2e70e08157d2e1759ac7b7

Aliases

arxiv: 1501.05300 · arxiv_version: 1501.05300v1 · doi: 10.48550/arxiv.1501.05300 · pith_short_12: FEPQQFCOCCFL · pith_short_16: FEPQQFCOCCFLSTIP · pith_short_8: FEPQQFCO

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/FEPQQFCOCCFLSTIPYO4WQK3XJS \
  | 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: 291f08144e108ab94d0fc3b9682b774c81e26eed8a2e70e08157d2e1759ac7b7

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4f78cc240018c1542c935c7afe2a83a7fa78e3b2340888a73d33630c27c89538",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-01-21T21:00:05Z",
    "title_canon_sha256": "d2e2e5c7eaa183e81eefc21ab760ffba510c3bdc15044d89d2f0a8b64d8e4f38"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.05300",
    "kind": "arxiv",
    "version": 1
  }
}