Pith Number

pith:7RR4JRG2

pith:2006:7RR4JRG2ULGJQMGSCSAP5LIAMW

not attested not anchored not stored refs pending

Challenges in optics for Extremely Large Telescope instrumentation

A. Bianco, B. Delabre, B. Snyders, C.J. Norrie, C.R. Cunningham, D.D. Walker, E. Atad-Ettedgui, F.M. Zerbi, H. Dekker, K.G. Strassmeier, L. Zago, M. Bougoin, M. Ghigo, M. Melozzi, P.A. Blanche, P. Hartmann, P. Span\`o, R. Takke

arxiv:astro-ph/0603763 v1 · 2006-03-28 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{7RR4JRG2ULGJQMGSCSAP5LIAMW}

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	2026-05-18T01:40:32.105409Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

fc63c4c4daa2cc9830d21480fead00659465c55bad2b6808f0fa3c1d03bb158a

Aliases

arxiv: astro-ph/0603763 · arxiv_version: astro-ph/0603763v1 · doi: 10.48550/arxiv.astro-ph/0603763 · pith_short_12: 7RR4JRG2ULGJ · pith_short_16: 7RR4JRG2ULGJQMGS · pith_short_8: 7RR4JRG2

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/7RR4JRG2ULGJQMGSCSAP5LIAMW \
  | 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: fc63c4c4daa2cc9830d21480fead00659465c55bad2b6808f0fa3c1d03bb158a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c1b7971a265b6e03aaafea865c09127cdc3ebad1698b449cc054e2585efeecb4",
    "cross_cats_sorted": [],
    "license": "",
    "primary_cat": "astro-ph",
    "submitted_at": "2006-03-28T13:26:29Z",
    "title_canon_sha256": "7102f5f643fc1c75191364fc559151c8172ea101505bd517a3667471be36c26c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "astro-ph/0603763",
    "kind": "arxiv",
    "version": 1
  }
}