Pith Number

pith:6V2RCUJA

pith:2015:6V2RCUJATLENKTDLE5XWSDMGD7

not attested not anchored not stored refs pending

A Hyper Suprime-Cam View of the Interacting Galaxies of the M81 Group

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

arxiv:1507.04889 v1 · 2015-07-17 · astro-ph.GA

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{6V2RCUJATLENKTDLE5XWSDMGD7}

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	2026-05-18T01:35:06.787819Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

f5751151209ac8d54c6b276f690d861ffaa09fbf5f44b8182d05ac7382d4424c

Aliases

arxiv: 1507.04889 · arxiv_version: 1507.04889v1 · doi: 10.48550/arxiv.1507.04889 · pith_short_12: 6V2RCUJATLEN · pith_short_16: 6V2RCUJATLENKTDL · pith_short_8: 6V2RCUJA

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/6V2RCUJATLENKTDLE5XWSDMGD7 \
  | 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: f5751151209ac8d54c6b276f690d861ffaa09fbf5f44b8182d05ac7382d4424c

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "a94e56ca45b27d32998a48a4d8901c83d8f3832ebb597ab652835456124349a9",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2015-07-17T09:33:55Z",
    "title_canon_sha256": "4cc76a9430f468cac4944764d0bef307e4c9b9c3fcca0f0af749faeca07e2d97"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1507.04889",
    "kind": "arxiv",
    "version": 1
  }
}