Pith Number

pith:EVYTWHRF

pith:2011:EVYTWHRF2O7AOVP6SCKHAY2KCO

not attested not anchored not stored refs pending

No wide spread of stellar ages in the Orion Nebula Cluster

(2) University of Sheffield, (3) University of Exeter), N. J. Mayne (3) ((1) Keele University, R. D. Jeffries (1), S. P. Littlefair (2), Tim Naylor (3)

arxiv:1108.2052 v1 · 2011-08-09 · 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{EVYTWHRF2O7AOVP6SCKHAY2KCO}

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	2026-05-18T02:00:59.576570Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

25713b1e25d3be0755fe909470634a139e6aae17ad1e49645800d911d31f09f2

Aliases

arxiv: 1108.2052 · arxiv_version: 1108.2052v1 · doi: 10.48550/arxiv.1108.2052 · pith_short_12: EVYTWHRF2O7A · pith_short_16: EVYTWHRF2O7AOVP6 · pith_short_8: EVYTWHRF

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/EVYTWHRF2O7AOVP6SCKHAY2KCO \
  | 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: 25713b1e25d3be0755fe909470634a139e6aae17ad1e49645800d911d31f09f2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1bef033caab0f964eaba8a01b2eda68526693c535ad677de13927cb9a344235d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-08-09T21:12:03Z",
    "title_canon_sha256": "216a3ee04e4dd8b744f129c60a9f30e60c0a38246403282ce74bb0cdb3082011"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2052",
    "kind": "arxiv",
    "version": 1
  }
}