Pith Number

pith:DAS2UQZJ

pith:2009:DAS2UQZJAF5S7AWLV32TF3EED7

not attested not anchored not stored refs pending

Dome C site testing: surface layer, free atmosphere seeing and isoplanatic angle statistics

A. Agabi, A. Ziad, D. Mekarnia, E. Aristidi, E. Bondoux, E. Fossat, F. Jeanneaux, H. Trinquet, J. Vernin, Z. Challita

arxiv:0904.2982 v1 · 2009-04-20 · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DAS2UQZJAF5S7AWLV32TF3EED7}

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	2026-05-18T02:13:58.970564Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1825aa4329017b2f82cbaef532ec841fc0ce5fe42767020c43cc3936f4820b42

Aliases

arxiv: 0904.2982 · arxiv_version: 0904.2982v1 · doi: 10.48550/arxiv.0904.2982 · pith_short_12: DAS2UQZJAF5S · pith_short_16: DAS2UQZJAF5S7AWL · pith_short_8: DAS2UQZJ

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/DAS2UQZJAF5S7AWLV32TF3EED7 \
  | 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: 1825aa4329017b2f82cbaef532ec841fc0ce5fe42767020c43cc3936f4820b42

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3704d07d996e05a12ccc59ed2f1c204678a558d41fb753ec847d32ac71e8d623",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2009-04-20T09:18:24Z",
    "title_canon_sha256": "94d9bb8796d5118e29124270cbc6f9070a1463f05030831133c53625cca7853c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0904.2982",
    "kind": "arxiv",
    "version": 1
  }
}