Pith Number

pith:EZRXYGXR

pith:2011:EZRXYGXR6A32OLFBJS5BUZCHHZ

not attested not anchored not stored refs pending

Detection of visible light from the darkest world

David M. Kipping, David S. Spiegel

arxiv:1108.2297 v2 · 2011-08-10 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EZRXYGXR6A32OLFBJS5BUZCHHZ}

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	2026-05-18T02:00:55.432928Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

26637c1af1f037a72ca14cba1a64473e5f11325570b1ebab14efc36a351d173a

Aliases

arxiv: 1108.2297 · arxiv_version: 1108.2297v2 · doi: 10.48550/arxiv.1108.2297 · pith_short_12: EZRXYGXR6A32 · pith_short_16: EZRXYGXR6A32OLFB · pith_short_8: EZRXYGXR

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/EZRXYGXR6A32OLFBJS5BUZCHHZ \
  | 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: 26637c1af1f037a72ca14cba1a64473e5f11325570b1ebab14efc36a351d173a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "480a1f4aa132ba280c4568cd1f0ef28800e7b6bd96c5386104fcf1a41cca94b6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2011-08-10T22:13:08Z",
    "title_canon_sha256": "f8e09c3e5b1b90db607c887d111be5bff148ced1c758f522d4e688ca127d4029"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1108.2297",
    "kind": "arxiv",
    "version": 2
  }
}