Pith Number

pith:PSD2EDMA

pith:2017:PSD2EDMAB7VUVO275XCQOLGV6R

not attested not anchored not stored refs pending

Accurate Distances to Important Spiral Galaxies: M63, M74, NGC 1291, NGC 4559, NGC 4625, NGC 5398

Andrew E. Dolphin, Danielle Berg, Evan D. Skillman, Kristen B. W. McQuinn, Robert Kennicutt

arxiv:1706.06586 v2 · 2017-06-20 · 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{PSD2EDMAB7VUVO275XCQOLGV6R}

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	2026-05-18T00:39:25.546511Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7c87a20d800feb4abb5fedc5072cd5f47cccddb3fbdb200e5c37b22b4efb9af2

Aliases

arxiv: 1706.06586 · arxiv_version: 1706.06586v2 · doi: 10.48550/arxiv.1706.06586 · pith_short_12: PSD2EDMAB7VU · pith_short_16: PSD2EDMAB7VUVO27 · pith_short_8: PSD2EDMA

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/PSD2EDMAB7VUVO275XCQOLGV6R \
  | 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: 7c87a20d800feb4abb5fedc5072cd5f47cccddb3fbdb200e5c37b22b4efb9af2

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "455e167ea464955fcb5a55ddb4017750097f1274eaeaab0fb16eeaf2dd90f3d7",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2017-06-20T18:00:00Z",
    "title_canon_sha256": "4db20fe76b065b503367d6770ad18b314a9112a3bc0f4e2cdd15c5338e93ff70"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1706.06586",
    "kind": "arxiv",
    "version": 2
  }
}