Pith Number

pith:FRUAUYLC

pith:2020:FRUAUYLCJ4CGGKOUR3BO36IVAR

not attested not anchored not stored refs pending

Evidence for Spin-orbit Alignment in the TRAPPIST-1 System

Akihiko Fukui, Akitoshi Ueda, Daniel Huber, Emeline Bolmont, Eric Gaidos, Fei Dai, Hiroki Harakawa, Joshua N. Winn, Jun Nishikawa, Klaus Hodapp, Lauren M. Weiss, Maria Hjorth, Masashi Omiya, Masato Ishizuka, Masayuki Kuzuhara, Mihoko Konishi, Motohide Tamura, Shane Jacobson, Simon Albrecht, Takashi Kurokawa, Takayuki Kotani, Takuma Serizawa, Teruyuki Hirano, Tomoyuki Kudo

arxiv:2002.05892 v1 · 2020-02-14 · astro-ph.EP · 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{FRUAUYLCJ4CGGKOUR3BO36IVAR}

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	2026-07-05T00:45:23.358053Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2c680a61624f046329d48ec2edf915047407dfb34fa95a15e5e8f963072517db

Aliases

arxiv: 2002.05892 · arxiv_version: 2002.05892v1 · doi: 10.48550/arxiv.2002.05892 · pith_short_12: FRUAUYLCJ4CG · pith_short_16: FRUAUYLCJ4CGGKOU · pith_short_8: FRUAUYLC

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/FRUAUYLCJ4CGGKOUR3BO36IVAR \
  | 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: 2c680a61624f046329d48ec2edf915047407dfb34fa95a15e5e8f963072517db

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "03f5f222b1f89449ca87de1f373bdd40e514d8ccfdc936c1246c706a33c46db9",
    "cross_cats_sorted": [
      "astro-ph.SR"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.EP",
    "submitted_at": "2020-02-14T07:17:38Z",
    "title_canon_sha256": "1c07dea5add146c59f53c370b441e6d71d4ee4bb90e900c62f6e2f9f815c528b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2002.05892",
    "kind": "arxiv",
    "version": 1
  }
}