Pith Number

pith:EDMWPTP3

pith:2011:EDMWPTP3ADJVS7AWGB26HAFSIM

not attested not anchored not stored refs pending

A generalised porosity formalism for isotropic and anisotropic effective opacity and its effects on X-ray line attenuation in clumped O star winds

David H. Cohen, Jon O. Sundqvist, Maurice A. Leutenegger, Richard H. D. Townsend, Stanley P. Owocki

arxiv:1111.1762 v1 · 2011-11-07 · 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	2026-05-18T01:59:44.054350Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

20d967cdfb00d3597c163075e380b2431f104ccdc46c9ad7bbbefdff449a7cae

Aliases

arxiv: 1111.1762 · arxiv_version: 1111.1762v1 · doi: 10.48550/arxiv.1111.1762 · pith_short_12: EDMWPTP3ADJV · pith_short_16: EDMWPTP3ADJVS7AW · pith_short_8: EDMWPTP3

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/EDMWPTP3ADJVS7AWGB26HAFSIM \
  | 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: 20d967cdfb00d3597c163075e380b2431f104ccdc46c9ad7bbbefdff449a7cae

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "59dd81edf0ba5a212ff3877f47bd1c4ac8f1841676f3594c1e423f431c20d961",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-11-07T22:19:15Z",
    "title_canon_sha256": "2859bda9ca83e602392902a894fa079be5d6a14d7f9442242b4bff92953c460c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1111.1762",
    "kind": "arxiv",
    "version": 1
  }
}