Pith Number

pith:FKFS7W6D

pith:2011:FKFS7W6DIBTGZEEXYWBRGEJPLE

not attested not anchored not stored refs pending

Near-infrared spectroscopy of five Blue Compact Dwarf galaxies: II Zw 40, Mrk 71, Mrk 930, Mrk 996 and SBS 0335-052E

(2) Astronomy Department, Charlottesville, Kyiv, T. X. Thuan (2) ((1) Main Astronomical Observatory, Ukraine, University of Virginia, USA), Y. I. Izotov (1)

arxiv:1104.0817 v1 · 2011-04-05 · astro-ph.CO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{FKFS7W6DIBTGZEEXYWBRGEJPLE}

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	2026-05-18T00:14:57.729043Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a8b2fdbc340666c9097c58313112f5929ead4a3b844b32bfba7bf6d84d2f242

Aliases

arxiv: 1104.0817 · arxiv_version: 1104.0817v1 · doi: 10.48550/arxiv.1104.0817 · pith_short_12: FKFS7W6DIBTG · pith_short_16: FKFS7W6DIBTGZEEX · pith_short_8: FKFS7W6D

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/FKFS7W6DIBTGZEEXYWBRGEJPLE \
  | 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: 2a8b2fdbc340666c9097c58313112f5929ead4a3b844b32bfba7bf6d84d2f242

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "90a220c74949ae54868cc51d1a863f831d5553126804171aa60a942a0beb991f",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.CO",
    "submitted_at": "2011-04-05T12:10:16Z",
    "title_canon_sha256": "47f8c979292ed9ea453c6fcdc7b10b88c90fe74868bc3ef4b7f2606090dff09b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1104.0817",
    "kind": "arxiv",
    "version": 1
  }
}