Pith Number

pith:OXQX7XQ7

pith:2015:OXQX7XQ7OSOKYKDXHSNDTMU4SA

not attested not anchored not stored refs pending

Fiber scrambling for high-resolution spectrographs. II. A double fiber scrambler for Keck Observatory

Andrew E. Szymkowiak, Colby Jurgenson, Debra A. Fischer, Jeff Valenti, John Moriarty, Julien F.P. Spronck, Zachary Kaplan

arxiv:1501.00328 v1 · 2015-01-01 · 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{OXQX7XQ7OSOKYKDXHSNDTMU4SA}

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	2026-05-18T01:19:30.502095Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

75e17fde1f749cac28773c9a39b29c903ae8702b84d9e6f8ecee7aa0810c8b21

Aliases

arxiv: 1501.00328 · arxiv_version: 1501.00328v1 · doi: 10.48550/arxiv.1501.00328 · pith_short_12: OXQX7XQ7OSOK · pith_short_16: OXQX7XQ7OSOKYKDX · pith_short_8: OXQX7XQ7

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/OXQX7XQ7OSOKYKDXHSNDTMU4SA \
  | 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: 75e17fde1f749cac28773c9a39b29c903ae8702b84d9e6f8ecee7aa0810c8b21

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a720dc11eacaf41d82854e8bdb5b7090eaad4c6ebe03f766467d4b0464143948",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2015-01-01T22:53:27Z",
    "title_canon_sha256": "f9dfac854ffbc4fbf129d5cdc6d5aa2b0954d9fc6baa223643d91ef7a69ed961"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.00328",
    "kind": "arxiv",
    "version": 1
  }
}