Pith Number

pith:HSNT2ZRK

pith:2019:HSNT2ZRKCZMMJD7TJYNFAMXQTG

not attested not anchored not stored refs pending

Stellar Spectroscopy in the Near-infrared with a Laser Frequency Comb

Alex Wolszczan, Andrew J. Metcalf, Andrew Monson, Arpita Roy, Chad F. Bender, Christian Schwab, Colin Nitroy, Connor Fredrick, Dan D. Hickstein, David A. Sterner, David R. Carlson, Emily Lubar, Eric Levi, Franklyn Quinlan, Fred Hearty, Gabriel Ycas, Gudmundur Stefansson, Jason T. Wright, Jeff Jennings, Joe P. Ninan, Kartik Srinivasan, Kyle F. Kaplan, Larry Ramsey, Michael Endl, Paul Robertson, Ryan Terrien, Sam Halverson, Scott A. Diddams, Scott Blakeslee, Scott B. Papp, Shubham Kanodia, Steinn Sigurdsson, Steve Osterman, Suvrath Mahadevan, Tyler Anderson, Wesley Brand, William D. Cochran

arxiv:1902.00500 v1 · 2019-02-01 · astro-ph.EP · astro-ph.IM · physics.optics

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HSNT2ZRKCZMMJD7TJYNFAMXQTG}

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	2026-05-17T23:52:21.493678Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

3c9b3d662a1658c48ff34e1a5032f0999816cd1fa49b0942446203b2340d9a5f

Aliases

arxiv: 1902.00500 · arxiv_version: 1902.00500v1 · doi: 10.48550/arxiv.1902.00500 · pith_short_12: HSNT2ZRKCZMM · pith_short_16: HSNT2ZRKCZMMJD7T · pith_short_8: HSNT2ZRK

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/HSNT2ZRKCZMMJD7TJYNFAMXQTG \
  | 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: 3c9b3d662a1658c48ff34e1a5032f0999816cd1fa49b0942446203b2340d9a5f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1663bcf7b387d19ab1d297494d7acc438688700cc4ebf6b3eee63589f68e3b3a",
    "cross_cats_sorted": [
      "astro-ph.IM",
      "physics.optics"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2019-02-01T18:38:41Z",
    "title_canon_sha256": "fc99bf13c89f523f28d04b384ff77d5567afc4422a5d7497b085f927252d667e"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1902.00500",
    "kind": "arxiv",
    "version": 1
  }
}