Pith Number

pith:G6IQRKKP

pith:2009:G6IQRKKP4PSRCUTHM7BVKNTWQ4

not attested not anchored not stored refs pending

Enhancing Our Knowledge of Northern Cepheids through Photometric Monitoring

Daniel J. Majaess, David G. Turner, David J. Lane, I. A. Usenko, Leonid N. Berdnikov, L. Szabados, V. V. Kovtyukh

arxiv:0907.2969 v1 · 2009-07-17 · 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{G6IQRKKP4PSRCUTHM7BVKNTWQ4}

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	2026-05-18T02:12:56.343337Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

379108a94fe3e511526767c3553676871c478ac0d19bcef0b913b903f47ade31

Aliases

arxiv: 0907.2969 · arxiv_version: 0907.2969v1 · doi: 10.48550/arxiv.0907.2969 · pith_short_12: G6IQRKKP4PSR · pith_short_16: G6IQRKKP4PSRCUTH · pith_short_8: G6IQRKKP

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/G6IQRKKP4PSRCUTHM7BVKNTWQ4 \
  | 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: 379108a94fe3e511526767c3553676871c478ac0d19bcef0b913b903f47ade31

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "6fc1a4edc430d3bd63a9b46945514aee6fbf4a725dd06d81ea507bcb5ca66005",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2009-07-17T12:55:42Z",
    "title_canon_sha256": "b7eae4db0a07df82422b905f126b07cfe07e19ba6b7fec92741ad49da9b8096b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "0907.2969",
    "kind": "arxiv",
    "version": 1
  }
}