Pith Number

pith:FRUDRF4W

pith:2026:FRUDRF4W6V5X24JB7AK6DZRNZ4

not attested not anchored not stored refs pending

The Rubin Observatory Target-of-Opportunity System in the First Year of Operations

Alex Drlica-Wagner, Alysha B. Shugart, Anastasia Alexov, Andreja Gomboc, Bruno O. S\'anchez, Christopher W. Walter, Chris Weaver, Colin Orion Chandler, Danica \v{Z}ilkov\'a, Daniel L. Wang, Devanshi Singh, Eric C. Bellm, Erik Dennihy, Erin Leigh Howard, Fabian Araneda-Baltierra, Federica Bettina Bianco, Gautham Narayan, Ian S. Sullivan, Igor Andreoni, J. Anthony Tyson, John Banovetz, Keith Bechtol, Kenneth Herner, Kevin Fanning, Kris Mortensen, Kshitija Kelkar, Leanne P. Guy, Marcelle Soares-Santos, Narayan Khadka, Paulina Venegas, Pedro H. Bernardinelli, Peter Yoachim, R. Lynne Jones, Robert Armstrong, Robert D. Blum, Robert H. Lupton, Sean Patrick MacBride, Shreya Anand, Tatiana Acero-Cuellar, Tiago Ribeiro, \v{Z}eljko Ivezi\'c, W. M. Wood-Vasey, Yijung Kang, Yousuke Utsumi

arxiv:2607.00217 v1 · 2026-06-30 · 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{FRUDRF4W6V5X24JB7AK6DZRNZ4}

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	2026-07-02T00:18:39.616854Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c68389796f57b7d7121f815e1e62dcf03f5762fdb0fd50d8ed1d9717d74eeec

Aliases

arxiv: 2607.00217 · arxiv_version: 2607.00217v1 · doi: 10.48550/arxiv.2607.00217 · pith_short_12: FRUDRF4W6V5X · pith_short_16: FRUDRF4W6V5X24JB · pith_short_8: FRUDRF4W

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/FRUDRF4W6V5X24JB7AK6DZRNZ4 \
  | 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: 2c68389796f57b7d7121f815e1e62dcf03f5762fdb0fd50d8ed1d9717d74eeec

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0663ff80dba93cfb9f2b162e5ca2fc8b3f0c63733337bffc0bc424b27c2bdb46",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2026-06-30T21:48:11Z",
    "title_canon_sha256": "16bba23ce6fce473514293c8fa03afc1865704a6ac0dcfd386654534cea1f320"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2607.00217",
    "kind": "arxiv",
    "version": 1
  }
}