Pith Number

pith:EGM6A4ZB

pith:2014:EGM6A4ZB3TBFZSZBUAF2H2L2SO

not attested not anchored not stored refs pending

Luminous and Variable Stars in M31 and M33. II. Luminous Blue Variables, Candidate LBVs, Fe II Emission Line Stars, and Other Supergiants

Birgitta Burggraf, D. J. Bomans, Kerstin Weis, Kris Davidson, Roberta M. Humphreys

arxiv:1407.2259 v1 · 2014-07-08 · astro-ph.SR

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{EGM6A4ZB3TBFZSZBUAF2H2L2SO}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more

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	2026-05-18T01:42:40.683144Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2199e07321dcc25ccb21a00ba3e97a93bab4015016e126425101590d0e2ef9a9

Aliases

arxiv: 1407.2259 · arxiv_version: 1407.2259v1 · doi: 10.48550/arxiv.1407.2259 · pith_short_12: EGM6A4ZB3TBF · pith_short_16: EGM6A4ZB3TBFZSZB · pith_short_8: EGM6A4ZB

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/EGM6A4ZB3TBFZSZBUAF2H2L2SO \
  | 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: 2199e07321dcc25ccb21a00ba3e97a93bab4015016e126425101590d0e2ef9a9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "d0ce04213ae891af5772cc83c6e916dac6cfacee8020bc80e6f1aaffe78f59f6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.SR",
    "submitted_at": "2014-07-08T20:06:16Z",
    "title_canon_sha256": "ad983603f18521608f810455da007b551a42feecbc77782214480ade03127cc7"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1407.2259",
    "kind": "arxiv",
    "version": 1
  }
}