Pith Number

pith:ZLRZ2MQ7

pith:2016:ZLRZ2MQ7ESCVNLRVIHQED5E5SR

not attested not anchored not stored refs pending

Discovery of Cycle-to-cycle Modulated Spectral Line Variability and Velocity Gradients in Long-period Cepheids

Richard I. Anderson

arxiv:1608.05403 v1 · 2016-08-18 · astro-ph.SR · 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{ZLRZ2MQ7ESCVNLRVIHQED5E5SR}

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	2026-05-18T01:08:31.202763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

cae39d321f248556ae3541e041f49d94452691ec8a51f251631f7658aa2de37c

Aliases

arxiv: 1608.05403 · arxiv_version: 1608.05403v1 · doi: 10.48550/arxiv.1608.05403 · pith_short_12: ZLRZ2MQ7ESCV · pith_short_16: ZLRZ2MQ7ESCVNLRV · pith_short_8: ZLRZ2MQ7

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/ZLRZ2MQ7ESCVNLRVIHQED5E5SR \
  | 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: cae39d321f248556ae3541e041f49d94452691ec8a51f251631f7658aa2de37c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "49b40fb4d86304ba6c671ef7fba17187f6b55c477f8c79d4cbca191ddd636f68",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2016-08-18T19:59:58Z",
    "title_canon_sha256": "c9bf9ff9cc358f7909ced2796e400448e8f0b4512a379dc5f7794cd37865f412"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1608.05403",
    "kind": "arxiv",
    "version": 1
  }
}