Pith Number

pith:5TWRRKLX

pith:2021:5TWRRKLXCPJ4HPZ66HDSVD7EUU

not attested not anchored not stored refs pending

A new automated tool for the spectral classification of OB stars

A. Zezas, E. Kyritsis, G. Maravelias, K. Kovlakas, P. Bonfini, P. Reig

arxiv:2110.10669 v1 · 2021-10-20 · astro-ph.SR · astro-ph.IM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{5TWRRKLXCPJ4HPZ66HDSVD7EUU}

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	2026-07-05T03:47:46.260904Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

eced18a97713d3c3bf3ef1c72a8fe4a530286e73e3fe62dc628495d8febb4e28

Aliases

arxiv: 2110.10669 · arxiv_version: 2110.10669v1 · doi: 10.48550/arxiv.2110.10669 · pith_short_12: 5TWRRKLXCPJ4 · pith_short_16: 5TWRRKLXCPJ4HPZ6 · pith_short_8: 5TWRRKLX

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/5TWRRKLXCPJ4HPZ66HDSVD7EUU \
  | 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: eced18a97713d3c3bf3ef1c72a8fe4a530286e73e3fe62dc628495d8febb4e28

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "f61c4fed5c422cf1e1d068844fb2901eaa78ac54efaaa3f432fd57e53313aaad",
    "cross_cats_sorted": [
      "astro-ph.IM"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2021-10-20T17:22:16Z",
    "title_canon_sha256": "96ca69b3a28960cfe01c771410adf82ef5a13aab3e21fa1a97e179338ec80160"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2110.10669",
    "kind": "arxiv",
    "version": 1
  }
}