Pith Number

pith:BN6IOUPR

pith:2019:BN6IOUPRGUX6VSSDSFML4LMYPR

not attested not anchored not stored refs pending

Stellar population and structural properties of dwarf galaxies and young stellar systems in the M81 group

Annette M.N. Ferguson, Edouard J. Bernard, Mike J. Irwin, Nobuo Arimoto, Sakurako Okamoto, Yousuke Utsumi

arxiv:1909.12997 v1 · 2019-09-28 · 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{BN6IOUPRGUX6VSSDSFML4LMYPR}

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	2026-07-05T00:17:16.686674Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

0b7c8751f1352feaca439158be2d987c7d159671098a3540c6d6d703af991c1c

Aliases

arxiv: 1909.12997 · arxiv_version: 1909.12997v1 · doi: 10.48550/arxiv.1909.12997 · pith_short_12: BN6IOUPRGUX6 · pith_short_16: BN6IOUPRGUX6VSSD · pith_short_8: BN6IOUPR

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/BN6IOUPRGUX6VSSDSFML4LMYPR \
  | 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: 0b7c8751f1352feaca439158be2d987c7d159671098a3540c6d6d703af991c1c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "83398b2690fa076979d380cbc686455db61c3de13d05472a9ecabafa8d1f3a14",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-09-28T01:13:25Z",
    "title_canon_sha256": "96c8006493e019b60ec7a32feeb89db36700f4bd3bd93a4a17f9e688e172e1e4"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1909.12997",
    "kind": "arxiv",
    "version": 1
  }
}