Pith Number

pith:2M6QNY4A

pith:2021:2M6QNY4A3CI2DJPKJDSIVOJKFX

not attested not anchored not stored refs pending

The Gaia-ASAS-SN classical Cepheids sample: I. Sample Selection

A. Rotundi, E. Poggio, H-W. Rix, K. Z. Stanek, L.Inno, R. Drimmel, T. Jayasinghe

arxiv:2103.08597 v1 · 2021-03-15 · astro-ph.GA · 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{2M6QNY4A3CI2DJPKJDSIVOJKFX}

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	2026-07-05T02:53:38.222178Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d33d06e380d891a1a5ea48e48ab92a2def5536036065619370104080a83b8b4c

Aliases

arxiv: 2103.08597 · arxiv_version: 2103.08597v1 · doi: 10.48550/arxiv.2103.08597 · pith_short_12: 2M6QNY4A3CI2 · pith_short_16: 2M6QNY4A3CI2DJPK · pith_short_8: 2M6QNY4A

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/2M6QNY4A3CI2DJPKJDSIVOJKFX \
  | 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: d33d06e380d891a1a5ea48e48ab92a2def5536036065619370104080a83b8b4c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "0a8fe0a4519c184b4841674d14d9f1ff2246a048b166226fb892117f43d789d1",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2021-03-15T14:25:49Z",
    "title_canon_sha256": "d594c4dec10bc536580e7c022bf31a6d5c44544372c156c80c7dd1d0aca98b9c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2103.08597",
    "kind": "arxiv",
    "version": 1
  }
}