Pith Number

pith:NWXOD5IQ

pith:2022:NWXOD5IQ3KV3SNMWGA6AOXEFSD

not attested not anchored not stored refs pending

Into the Depths: a new activity metric for high-precision radial velocity measurements based on line depth variations

Andrew W. Howard, Jared C. Siegel, Ryan A. Rubenzahl, Samuel Halverson

arxiv:2204.05810 v1 · 2022-04-12 · astro-ph.SR · astro-ph.EP · 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{NWXOD5IQ3KV3SNMWGA6AOXEFSD}

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	2026-07-05T04:24:19.231555Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

6daee1f510daabb93596303c075c8590f2700966aafd0ed5fb755e73c56ba290

Aliases

arxiv: 2204.05810 · arxiv_version: 2204.05810v1 · doi: 10.48550/arxiv.2204.05810 · pith_short_12: NWXOD5IQ3KV3 · pith_short_16: NWXOD5IQ3KV3SNMW · pith_short_8: NWXOD5IQ

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/NWXOD5IQ3KV3SNMWGA6AOXEFSD \
  | 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: 6daee1f510daabb93596303c075c8590f2700966aafd0ed5fb755e73c56ba290

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "73dd0fedab03385dde36aaed14359b8311cc376b115317736914528d5ba1b03c",
    "cross_cats_sorted": [
      "astro-ph.EP",
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2022-04-12T13:48:29Z",
    "title_canon_sha256": "af670f06ffe6ec4364614e3b94c61a7568760b0e062f080e6ad7c69b05e19852"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2204.05810",
    "kind": "arxiv",
    "version": 1
  }
}