Pith Number

pith:B4EK5N6W

pith:2013:B4EK5N6WXDW7IDV46DC7BWZFYD

not attested not anchored not stored refs pending

CAFE: Calar Alto Fiber-fed Echelle spectrograph

D. Barrado, D. Benitez, F. Grupp, J. Aceituno, J. Bean, J. Lillo, L. M. Montoya, M. Hernan-Obispo, S. Dreizler, S. F. Sanchez, S. Pedraz, U. Thiele

arxiv:1301.2066 v1 · 2013-01-10 · 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{B4EK5N6WXDW7IDV46DC7BWZFYD}

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	2026-05-18T01:52:14.055370Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0f08aeb7d6b8edf40ebcf0c5f0db25c0ec3a98b8bc026a89d94e5aa5b7cb3ea0

Aliases

arxiv: 1301.2066 · arxiv_version: 1301.2066v1 · doi: 10.48550/arxiv.1301.2066 · pith_short_12: B4EK5N6WXDW7 · pith_short_16: B4EK5N6WXDW7IDV4 · pith_short_8: B4EK5N6W

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/B4EK5N6WXDW7IDV46DC7BWZFYD \
  | 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: 0f08aeb7d6b8edf40ebcf0c5f0db25c0ec3a98b8bc026a89d94e5aa5b7cb3ea0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "27bb7a06e7405482de6f2cdc33619a9d3992a9fb7d167b63d1760ae20541427d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2013-01-10T10:04:40Z",
    "title_canon_sha256": "56debe4a39f71969bd40e25468b563e45aefdd2255395021a7df43615d4da473"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1301.2066",
    "kind": "arxiv",
    "version": 1
  }
}