Pith Number

pith:YCNJX4EC

pith:2019:YCNJX4EC22HXNWP6GKESBHJXPA

not attested not anchored not stored refs pending

Periodic Spectral Modulations Arise from Non-random Spacing of Spectral Absorption Lines

Michael Hippke

arxiv:1901.00523 v1 · 2019-01-02 · 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{YCNJX4EC22HXNWP6GKESBHJXPA}

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	2026-05-17T23:54:15.390749Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

c09a9bf082d68f76d9fe3289209d37780459e4ea163add2dfeab024f873a891e

Aliases

arxiv: 1901.00523 · arxiv_version: 1901.00523v1 · doi: 10.48550/arxiv.1901.00523 · pith_short_12: YCNJX4EC22HX · pith_short_16: YCNJX4EC22HXNWP6 · pith_short_8: YCNJX4EC

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/YCNJX4EC22HXNWP6GKESBHJXPA \
  | 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: c09a9bf082d68f76d9fe3289209d37780459e4ea163add2dfeab024f873a891e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "cd67324957492c1854ac140559a5b84a8a99914d93d5ca33b537e4c130493d94",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.IM",
    "submitted_at": "2019-01-02T20:26:39Z",
    "title_canon_sha256": "5b2db7c190b48cf8cb469d24ced3b2d5bc2d75d568c7a77afc627c8084548143"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.00523",
    "kind": "arxiv",
    "version": 1
  }
}