Pith Number

pith:4MMBCI7D

pith:2011:4MMBCI7D2MB2RGKEBE6RIBP5FQ

not attested not anchored not stored refs pending

On a new theoretical calibration of the Stroemgren hk metallicity index: NGC6522 as a first test case

A. Calamida, A. Pietrinferni, B. Anthony-Twarog, B. Twarog, C. Corsi, F. Grundahl, G. Bono, G. Iannicola, I. Ferraro, L. Pulone, M. Zoccali, R. Buonanno, S. Cassisi, V. Ripepi

arxiv:1110.4314 v1 · 2011-10-19 · 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{4MMBCI7D2MB2RGKEBE6RIBP5FQ}

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	2026-05-18T02:00:08.536127Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

e3181123e3d303a89944093d1405fd2c3ef87ae5ec83fbaec886ac3f1ccb933f

Aliases

arxiv: 1110.4314 · arxiv_version: 1110.4314v1 · doi: 10.48550/arxiv.1110.4314 · pith_short_12: 4MMBCI7D2MB2 · pith_short_16: 4MMBCI7D2MB2RGKE · pith_short_8: 4MMBCI7D

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/4MMBCI7D2MB2RGKEBE6RIBP5FQ \
  | 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: e3181123e3d303a89944093d1405fd2c3ef87ae5ec83fbaec886ac3f1ccb933f

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1296a7ade91db60a7aaf2e22c5a325a8c8c46e90eb1e487b589824ba7531317b",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-10-19T15:45:17Z",
    "title_canon_sha256": "41fe3a27d374bad8da71088ebc544cc6b08ffd0b487cd7eb4414af1da78a98de"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.4314",
    "kind": "arxiv",
    "version": 1
  }
}