Pith Number

pith:W7GDYPCJ

pith:2019:W7GDYPCJ6VHLFS3WALADRR2JTX

not attested not anchored not stored refs pending

Predicted MOND velocity dispersions for a catalog of ultra-diffuse galaxies in group environments

Benoit Famaey, Hongsheng Zhao, Oliver M\"uller

arxiv:1901.02679 v1 · 2019-01-09 · 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{W7GDYPCJ6VHLFS3WALADRR2JTX}

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	2026-05-17T23:52:03.356258Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b7cc3c3c49f54eb2cb7602c038c7499df1896deb8bc698a11ef9990a2fd7e9f9

Aliases

arxiv: 1901.02679 · arxiv_version: 1901.02679v1 · doi: 10.48550/arxiv.1901.02679 · pith_short_12: W7GDYPCJ6VHL · pith_short_16: W7GDYPCJ6VHLFS3W · pith_short_8: W7GDYPCJ

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/W7GDYPCJ6VHLFS3WALADRR2JTX \
  | 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: b7cc3c3c49f54eb2cb7602c038c7499df1896deb8bc698a11ef9990a2fd7e9f9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "abef07e40516578a1daa4c38f39805e646f3a7669c7db92a618b0bc9f4132b07",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "astro-ph.GA",
    "submitted_at": "2019-01-09T11:12:57Z",
    "title_canon_sha256": "1c9ca2211f6301837816771a66e83e2fcf2e696ae9c28cda353d52d45cb1ba49"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1901.02679",
    "kind": "arxiv",
    "version": 1
  }
}