Pith Number

pith:W7QF6C3V

pith:2008:W7QF6C3VR3YHHJKNQ7HSFTBQ3L

not attested not anchored not stored refs pending

An Inexpensive Field-Widened Monolithic Michelson Interferometer for Precision Radial Velocity Measurements

Curtis DeWitt, Dan McDavitt, Jian Ge, Julian C. van Eyken, Scott W. Fleming, Suvrath Mahadevan, Xiaoke Wan

arxiv:0809.3721 v1 · 2008-09-22 · astro-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{W7QF6C3VR3YHHJKNQ7HSFTBQ3L}

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	2026-05-18T02:15:34.033433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7e05f0b758ef073a54d87cf22cc30dad59efb614c4ef45a804f703213edc329

Aliases

arxiv: 0809.3721 · arxiv_version: 0809.3721v1 · doi: 10.48550/arxiv.0809.3721 · pith_short_12: W7QF6C3VR3YH · pith_short_16: W7QF6C3VR3YHHJKN · pith_short_8: W7QF6C3V

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/W7QF6C3VR3YHHJKNQ7HSFTBQ3L \
  | 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: b7e05f0b758ef073a54d87cf22cc30dad59efb614c4ef45a804f703213edc329

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1312306e7d97b8b65804ad3ebbdf4eda76912a0087eb6476013aac0781f45bb4",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph",
    "submitted_at": "2008-09-22T14:47:21Z",
    "title_canon_sha256": "fe3d3d7e4b8a8e01e58e665712f88e99824dd16dd5fda48788bf2e1bed29b090"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0809.3721",
    "kind": "arxiv",
    "version": 1
  }
}