Pith Number

pith:PCJUIYT5

pith:2026:PCJUIYT552YHTDRY4DN2VVPUM6

not attested not anchored not stored refs pending

On-sky Fibre-Target-Alignment of the 4MOST instrument: calibration and performance

Alexander Pramskiy, Daniel Sablowski, Diogo Rio Fernandes, Gerard Zins, Ingo Stilz, Ole Streicher, Roland Winkler, Scott Smedley, Steffen Frey, Thomas Liebner, Thomas Szeifert, Weijia Sun

arxiv:2606.27882 v1 · 2026-06-26 · 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{PCJUIYT552YHTDRY4DN2VVPUM6}

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	2026-06-29T01:14:51.598083Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

789344627deeb0798e38e0dbaad5f467b5e604ab9c59cc7ac53c414f6fc8395b

Aliases

arxiv: 2606.27882 · arxiv_version: 2606.27882v1 · doi: 10.48550/arxiv.2606.27882 · pith_short_12: PCJUIYT552YH · pith_short_16: PCJUIYT552YHTDRY · pith_short_8: PCJUIYT5

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/PCJUIYT552YHTDRY4DN2VVPUM6 \
  | 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: 789344627deeb0798e38e0dbaad5f467b5e604ab9c59cc7ac53c414f6fc8395b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e7bbc8e9e8e9e07aec48b8a1ee7f38c9391342f8ff239dcc429bab6e62763549",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-06-26T09:24:18Z",
    "title_canon_sha256": "a7008d8f0e42593340eae02f57affe91850891e6efe0b5258ba3fea590b9ac30"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.27882",
    "kind": "arxiv",
    "version": 1
  }
}