Pith Number

pith:UBQLBYQ7

pith:2018:UBQLBYQ76YTSZZYP7PSIYAKEDC

not attested not anchored not stored refs pending

Progress on ELROI satellite license plate flight prototypes

Aaron P. Zucherman, Anders M. Jorgensen, Charles T. Weaver, David M. Palmer, James Z. Harris, Joellen S. Lansford, Rebecca M. Holmes, Riley Myers, Sawyer Gill

arxiv:1804.00649 v1 · 2018-04-02 · 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{UBQLBYQ76YTSZZYP7PSIYAKEDC}

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	2026-05-18T00:12:31.850338Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

a060b0e21ff6272ce70ffbe48c0144188a59e531cbc24397eaf7998df40a5db2

Aliases

arxiv: 1804.00649 · arxiv_version: 1804.00649v1 · doi: 10.48550/arxiv.1804.00649 · pith_short_12: UBQLBYQ76YTS · pith_short_16: UBQLBYQ76YTSZZYP · pith_short_8: UBQLBYQ7

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/UBQLBYQ76YTSZZYP7PSIYAKEDC \
  | 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: a060b0e21ff6272ce70ffbe48c0144188a59e531cbc24397eaf7998df40a5db2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "794b31eb2ae8ec04189f961419e2aa6f1f614f543c80c9681480ef0477030113",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2018-04-02T17:54:54Z",
    "title_canon_sha256": "c50893f29274dabce6b3910a24f79c4f305c5c23074baf5e3ba2d1aa1eb5acef"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.00649",
    "kind": "arxiv",
    "version": 1
  }
}