Pith Number

pith:K73RQKYG

pith:2020:K73RQKYGQMIEZOFYI77RAZRW3U

not attested not anchored not stored refs pending

High-resolution spectroscopic study of massive blue and red supergiants in Per OB1

A. de Burgos, A. Herrero, D. J. Lennon, I. Negueruela, L. R. Patrick, M. A. Urbaneja, R. Dorda, S. Sim\'on-D\'iaz

arxiv:2008.13299 v2 · 2020-08-30 · astro-ph.SR · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{K73RQKYGQMIEZOFYI77RAZRW3U}

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	2026-07-05T01:50:30.273525Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

57f7182b0683104cb8b847ff106636dd201b53fee7977f50b3ec3c7bfec19be4

Aliases

arxiv: 2008.13299 · arxiv_version: 2008.13299v2 · doi: 10.48550/arxiv.2008.13299 · pith_short_12: K73RQKYGQMIE · pith_short_16: K73RQKYGQMIEZOFY · pith_short_8: K73RQKYG

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/K73RQKYGQMIEZOFYI77RAZRW3U \
  | 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: 57f7182b0683104cb8b847ff106636dd201b53fee7977f50b3ec3c7bfec19be4

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "346375524789d2a38cb52c93c71c0ec0a457f96d8091ee7dc04bd64b78dc1e28",
    "cross_cats_sorted": [
      "astro-ph.GA"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2020-08-30T23:57:47Z",
    "title_canon_sha256": "43a732c2c677790ae5501eabb99b0615c9ee2618134c2965d20e742fde34ab18"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2008.13299",
    "kind": "arxiv",
    "version": 2
  }
}