Pith Number

pith:HFJI5EDW

pith:2010:HFJI5EDW2BCCCYJEXARA2TU6HI

not attested not anchored not stored refs pending

The upper atmosphere of the exoplanet HD209458b revealed by the sodium D lines: Temperature-pressure profile, ionization layer, and thermosphere

A. Lecavelier des Etangs, A. Vidal-Madjar, C. Moutou, D. Ehrenreich, D.K. Sing, G. Hebrard, I. Boisse, J.-M. Desert, R. Ferlet

arxiv:1012.5938 v1 · 2010-12-29 · astro-ph.EP

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	2026-05-18T02:04:16.903515Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

39528e9076d044216124b8220d4e9e3a1bcc2aff6f9bfcace99fbc1170f6ac9c

Aliases

arxiv: 1012.5938 · arxiv_version: 1012.5938v1 · doi: 10.48550/arxiv.1012.5938 · pith_short_12: HFJI5EDW2BCC · pith_short_16: HFJI5EDW2BCCCYJE · pith_short_8: HFJI5EDW

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/HFJI5EDW2BCCCYJEXARA2TU6HI \
  | 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: 39528e9076d044216124b8220d4e9e3a1bcc2aff6f9bfcace99fbc1170f6ac9c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "993a9862a4ace7564e2ad4dd4887dcaafe56a9cf47651bd48d439c6a339d7776",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2010-12-29T13:51:55Z",
    "title_canon_sha256": "eb55a70e2d69f1aef76c75bb9a1e339e53375246f58bdc6797bdab062c340ce8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1012.5938",
    "kind": "arxiv",
    "version": 1
  }
}