Pith Number

pith:E6XUUAB5

pith:2013:E6XUUAB5R75U72BL6FFVO6SEF3

not attested not anchored not stored refs pending

Determining Reflectance Spectra of Surfaces and Clouds on Exoplanets

Nicolas B. Cowan, Talia E. Strait (Northwestern University)

arxiv:1302.0006 v1 · 2013-01-31 · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{E6XUUAB5R75U72BL6FFVO6SEF3}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:51:56.476919Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

27af4a003d8ffb4fe82bf14b577a442ee305adf05c7d00756b2beaa199898759

Aliases

arxiv: 1302.0006 · arxiv_version: 1302.0006v1 · doi: 10.48550/arxiv.1302.0006 · pith_short_12: E6XUUAB5R75U · pith_short_16: E6XUUAB5R75U72BL · pith_short_8: E6XUUAB5

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/E6XUUAB5R75U72BL6FFVO6SEF3 \
  | 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: 27af4a003d8ffb4fe82bf14b577a442ee305adf05c7d00756b2beaa199898759

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ee5df46dea91b7254a9748020051560d854d61fbb6095b4c0dc4c3d5e6a85a57",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2013-01-31T21:00:01Z",
    "title_canon_sha256": "7be3c2eb4226e3280bbb25d2a8818012f3ffef9d8b73fbc51315e361627a166e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1302.0006",
    "kind": "arxiv",
    "version": 1
  }
}