Pith Number

pith:FKMZORZ3

pith:2018:FKMZORZ3MBGNKJEUI7CRMR3LXE

not attested not anchored not stored refs pending

The Distance of the Dark Matter Deficient Galaxy NGC1052-DF2

Aaron Romanowsky, Charlie Conroy, Pieter van Dokkum, Shany Danieli, Yotam Cohen

arxiv:1807.06025 v2 · 2018-07-16 · 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{FKMZORZ3MBGNKJEUI7CRMR3LXE}

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	2026-05-18T00:06:37.513086Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2a9997473b604cd5249447c516476bb92cab030bf5c9ec5fd04ec7fe2e98c724

Aliases

arxiv: 1807.06025 · arxiv_version: 1807.06025v2 · doi: 10.48550/arxiv.1807.06025 · pith_short_12: FKMZORZ3MBGN · pith_short_16: FKMZORZ3MBGNKJEU · pith_short_8: FKMZORZ3

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/FKMZORZ3MBGNKJEUI7CRMR3LXE \
  | 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: 2a9997473b604cd5249447c516476bb92cab030bf5c9ec5fd04ec7fe2e98c724

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "c9006f14e3f3302ae1a74e8c3b2494ca26d39e14e63bd0e1933cdbd6f8819433",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2018-07-16T18:00:03Z",
    "title_canon_sha256": "02a28f342bccbcf54ba23a745ae9dfd4787ddc8476bb6e4194b37836474e8592"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1807.06025",
    "kind": "arxiv",
    "version": 2
  }
}