Pith Number

pith:ZXQME2AQ

pith:2018:ZXQME2AQ5GJPIYHHUS6XLN2DTB

not attested not anchored not stored refs pending

Spectroscopic time-series analysis of R Canis Majoris

A. Tkachenko, D. E. Mkrtichian, F. Pertermann, H. Lehmann, N. A-thano, V. Tsymbal

arxiv:1804.04530 v2 · 2018-04-12 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{ZXQME2AQ5GJPIYHHUS6XLN2DTB}

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	2026-05-18T00:09:14.788090Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cde0c26810e992f460e7a4bd75b743987dae2af3df56da31fb12ce0e7e96412b

Aliases

arxiv: 1804.04530 · arxiv_version: 1804.04530v2 · doi: 10.48550/arxiv.1804.04530 · pith_short_12: ZXQME2AQ5GJP · pith_short_16: ZXQME2AQ5GJPIYHH · pith_short_8: ZXQME2AQ

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/ZXQME2AQ5GJPIYHHUS6XLN2DTB \
  | 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: cde0c26810e992f460e7a4bd75b743987dae2af3df56da31fb12ce0e7e96412b

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ab5436c396273c66f188a532913ca086cf16cb7c936ead7cfef74302d9ec11d1",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2018-04-12T14:23:05Z",
    "title_canon_sha256": "3669d7f536692e66ea8f8c613aada536bbe5573866e60be9276ce86e0ea66705"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1804.04530",
    "kind": "arxiv",
    "version": 2
  }
}