Pith Number

pith:PBYVSG4S

pith:2015:PBYVSG4S5PRXTVNGQNTXB72G6E

not attested not anchored not stored refs pending

The unusual photometric variability of the PMS star GM Cep

D. Dimitrov, D. Kjurkchieva, E. Semkov, I. Stateva, K. Stoyanov, S. Ibryamov, S. Peneva, T. Milanov, V. Radeva

arxiv:1502.07579 v1 · 2015-02-26 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PBYVSG4S5PRXTVNGQNTXB72G6E}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:40:54.314334Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7871591b92ebe379d5a6836770ff46f1284a8541663b5ba36cc8f04dc80e1418

Aliases

arxiv: 1502.07579 · arxiv_version: 1502.07579v1 · doi: 10.48550/arxiv.1502.07579 · pith_short_12: PBYVSG4S5PRX · pith_short_16: PBYVSG4S5PRXTVNG · pith_short_8: PBYVSG4S

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/PBYVSG4S5PRXTVNGQNTXB72G6E \
  | 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: 7871591b92ebe379d5a6836770ff46f1284a8541663b5ba36cc8f04dc80e1418

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac94549016dc6295e9a6e6963616da4f41c284ac0bf5c6e93bf16edb67435842",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2015-02-26T14:57:26Z",
    "title_canon_sha256": "4897dce6b8d68ca70a31d0296e8c43d6270da0f7e904a733f1b2973a3deb3c61"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1502.07579",
    "kind": "arxiv",
    "version": 1
  }
}