Pith Number

pith:DFIZCBQT

pith:2015:DFIZCBQTMVKHRQPVTMLH3D3DV6

not attested not anchored not stored refs pending

Popularity and Quality in Social News Aggregators: A Study of Reddit and Hacker News

Greg Stoddard

arxiv:1501.07860 v1 · 2015-01-30 · cs.SI · physics.soc-ph

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{DFIZCBQTMVKHRQPVTMLH3D3DV6}

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	2026-05-18T02:28:13.931703Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

1951910613655478c1f59b167d8f63af9efa73b616772916f002a9d57ad68ba6

Aliases

arxiv: 1501.07860 · arxiv_version: 1501.07860v1 · doi: 10.48550/arxiv.1501.07860 · pith_short_12: DFIZCBQTMVKH · pith_short_16: DFIZCBQTMVKHRQPV · pith_short_8: DFIZCBQT

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/DFIZCBQTMVKHRQPVTMLH3D3DV6 \
  | 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: 1951910613655478c1f59b167d8f63af9efa73b616772916f002a9d57ad68ba6

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ba39018d07ed0a3a512d0defdc4ef1f5c09208142047f63e9bc4df2920bbd089",
    "cross_cats_sorted": [
      "physics.soc-ph"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-01-30T17:45:39Z",
    "title_canon_sha256": "e3ea79486f55fa36e0d5a9380c08e2c98e6aee80321d6bab10ecfd5f3b7ba566"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1501.07860",
    "kind": "arxiv",
    "version": 1
  }
}