Pith Number

pith:AMPAHKTN

pith:2010:AMPAHKTNBUQB27GRPWANYKVRA4

not attested not anchored not stored refs pending

A high-resolution spectroscopic survey of late-type stars: chromospheric activity, rotation, kinematics, and age

D. Montes, E. De Castro, I. Crespo-Chacon, J. Lopez-Santiago, M. C. Galvez-Ortiz, M. Cornide, M. J. Fernandez-Figueroa, R. M. Martinez-Arnaiz

arxiv:1002.1663 v1 · 2010-02-08 · 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{AMPAHKTNBUQB27GRPWANYKVRA4}

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	2026-05-18T02:09:11.225917Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

031e03aa6d0d201d7cd17d80dc2ab1071d413373272780e2fc5f25b38756a3f0

Aliases

arxiv: 1002.1663 · arxiv_version: 1002.1663v1 · doi: 10.48550/arxiv.1002.1663 · pith_short_12: AMPAHKTNBUQB · pith_short_16: AMPAHKTNBUQB27GR · pith_short_8: AMPAHKTN

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/AMPAHKTNBUQB27GRPWANYKVRA4 \
  | 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: 031e03aa6d0d201d7cd17d80dc2ab1071d413373272780e2fc5f25b38756a3f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c2ded5170eb00fed7472639b3ffafcb7cda9985535acf65e04f3c93b02854685",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2010-02-08T17:41:32Z",
    "title_canon_sha256": "c458203e07f0196a338e02e8055edabf46c7e15bef8a8377c88d8ce937bede4c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1002.1663",
    "kind": "arxiv",
    "version": 1
  }
}