Pith Number

pith:XQAGRQBJ

pith:2026:XQAGRQBJLYX6L6PV3AWNESNVK4

not attested not anchored not stored refs pending

Feasibility of up-the-ramp sampling under variable sky for ground-based spectrographs

Gaia Gaspar, James E. H. Turner, Marcin Sawicki, Nelson Nunes, Rub\'en J. D\'iaz

arxiv:2606.13600 v1 · 2026-06-11 · 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{XQAGRQBJLYX6L6PV3AWNESNVK4}

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	2026-06-12T01:10:12.430553Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

bc0068c0295e2fe5f9f5d82cd249b557008a7744dac020061d292ff1aa5cd011

Aliases

arxiv: 2606.13600 · arxiv_version: 2606.13600v1 · doi: 10.48550/arxiv.2606.13600 · pith_short_12: XQAGRQBJLYX6 · pith_short_16: XQAGRQBJLYX6L6PV · pith_short_8: XQAGRQBJ

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/XQAGRQBJLYX6L6PV3AWNESNVK4 \
  | 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: bc0068c0295e2fe5f9f5d82cd249b557008a7744dac020061d292ff1aa5cd011

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16dbbd8f7929263a2c1376ab17a8892c02a5ab496f9559f2e01bce2b762f06c8",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-06-11T17:18:35Z",
    "title_canon_sha256": "b16f85513435d42827f3c55b233e2c73532ce5dfbb826f6fec643c5745de6af8"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2606.13600",
    "kind": "arxiv",
    "version": 1
  }
}