Pith Number

pith:SPZFO2CX

pith:2020:SPZFO2CXV6H2JDIBQFHIODD2CO

not attested not anchored not stored refs pending

Hunt for Starspots in HARPS Spectra of G and K Stars

Brett M. Morris, Brice-Olivier Demory, Daniel Kitzmann, H. Jens Hoeijmakers

arxiv:2005.06749 v1 · 2020-05-14 · astro-ph.SR · astro-ph.EP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SPZFO2CXV6H2JDIBQFHIODD2CO}

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	2026-07-05T01:10:38.631661Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

93f2576857af8fa48d01814e870c7a13b7aa118b22e8d357396dc1719e1a2a9a

Aliases

arxiv: 2005.06749 · arxiv_version: 2005.06749v1 · doi: 10.48550/arxiv.2005.06749 · pith_short_12: SPZFO2CXV6H2 · pith_short_16: SPZFO2CXV6H2JDIB · pith_short_8: SPZFO2CX

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/SPZFO2CXV6H2JDIBQFHIODD2CO \
  | 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: 93f2576857af8fa48d01814e870c7a13b7aa118b22e8d357396dc1719e1a2a9a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "856c8a327319a81bbef98c564d2017590ec5ff19b71d4619b45ea8b81b5ee5c1",
    "cross_cats_sorted": [
      "astro-ph.EP"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-05-14T06:53:54Z",
    "title_canon_sha256": "6e49a9c00359ca783932ea7fe6c64f8e4d4acc93fd5a54f53fc643e781adfe25"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2005.06749",
    "kind": "arxiv",
    "version": 1
  }
}