Pith Number

pith:BLCG6MEX

pith:2011:BLCG6MEXJXANXE3OTGCGHCNN5E

not attested not anchored not stored refs pending

First firm spectral classification of an early-B pre-main-sequence star: B275 in M17

B.B. Ochsendorf, L.B.F.M. Waters, L.E. Ellerbroek, L. Kaper, O.E. Hartoog, R. Chini, V. Hoffmeister

arxiv:1110.5755 v1 · 2011-10-26 · 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{BLCG6MEXJXANXE3OTGCGHCNN5E}

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	2026-05-18T02:00:03.700945Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0ac46f30974dc0db936e99846389ade917921613792275e40f3d191938b4a9d6

Aliases

arxiv: 1110.5755 · arxiv_version: 1110.5755v1 · doi: 10.48550/arxiv.1110.5755 · pith_short_12: BLCG6MEXJXAN · pith_short_16: BLCG6MEXJXANXE3O · pith_short_8: BLCG6MEX

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/BLCG6MEXJXANXE3OTGCGHCNN5E \
  | 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: 0ac46f30974dc0db936e99846389ade917921613792275e40f3d191938b4a9d6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "1378b8df31ac52cfcab4f49b88d5460936509be0a59c9a5fcc151e090a37487d",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2011-10-26T10:10:41Z",
    "title_canon_sha256": "fec66f3eeadda9596b2c8bd3a28d57bc7980feae87f4fb2ec8f53cd100f7833a"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1110.5755",
    "kind": "arxiv",
    "version": 1
  }
}