Pith Number

pith:DFHKH5Y2

pith:2021:DFHKH5Y2Z3I7XT66A6BU6YDFZY

not attested not anchored not stored refs pending

Installation of the Dark Energy Spectroscopic Instrument at the Mayall 4-meter telescope

Armin Karcher, Ashley J. Ross, Bob Stupak, Charles Baltay, Christophe Magneville, Claire Poppett, Daniel Pappalardo, David Brooks, David Sprayberry, Derek Guenther, Enrique Gazta\~naga, Francisco Prada, Gaston Gutierrez, Gregory Tarle, Jerry Edelstein, John Donaldson, Joseph Silber, Kai Zhang, Klaus Honscheid, Lori Allen, Martin Landriau, Matt Evatt, Michael Hawes, Michael Levi, Michael Schubnell, Parker Fagrelius, Pat Jelinsky, Patrick Dunlop, Paul Martini, Peter Doel, Pierre-Henri Carton, Ray Sharples, Richard Joyce, Robert Besuner, Robert Marshall, William Shourt, Yutong Duan

arxiv:2101.11794 v1 · 2021-01-28 · 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{DFHKH5Y2Z3I7XT66A6BU6YDFZY}

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	2026-07-05T02:10:31.046988Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

194ea3f71aced1fbcfde07834f6065ce0207d8c2dbb7858336bd6c3c2100054e

Aliases

arxiv: 2101.11794 · arxiv_version: 2101.11794v1 · doi: 10.48550/arxiv.2101.11794 · pith_short_12: DFHKH5Y2Z3I7 · pith_short_16: DFHKH5Y2Z3I7XT66 · pith_short_8: DFHKH5Y2

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/DFHKH5Y2Z3I7XT66A6BU6YDFZY \
  | 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: 194ea3f71aced1fbcfde07834f6065ce0207d8c2dbb7858336bd6c3c2100054e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b6c8e9c6436080b884b6842caa0cb745db663d8e724336b10b928837efd8d0b7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2021-01-28T03:13:03Z",
    "title_canon_sha256": "83fe851e9a66e11ee98f4711ea81e8aef0d14a7b86cb4f177ca26dc6e4aa42e0"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2101.11794",
    "kind": "arxiv",
    "version": 1
  }
}