Pith Number

pith:QPH57YYZ

pith:2016:QPH57YYZ6YFVL5GMCEQYZ3NTYJ

not attested not anchored not stored refs pending

How the nature of web services drives vocabulary creation in social tagging

Kazuhiko Kato, Koya Sato, Mizuki Oka, Takashi Ikegami, Yasuhiro Hashimoto

arxiv:1604.07993 v2 · 2016-04-27 · cs.SI

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{QPH57YYZ6YFVL5GMCEQYZ3NTYJ}

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	2026-05-18T00:48:42.828201Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

83cfdfe319f60b55f4cc11218cedb3c261f284e4720979a090142de9f21bed5e

Aliases

arxiv: 1604.07993 · arxiv_version: 1604.07993v2 · doi: 10.48550/arxiv.1604.07993 · pith_short_12: QPH57YYZ6YFV · pith_short_16: QPH57YYZ6YFVL5GM · pith_short_8: QPH57YYZ

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/QPH57YYZ6YFVL5GMCEQYZ3NTYJ \
  | 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: 83cfdfe319f60b55f4cc11218cedb3c261f284e4720979a090142de9f21bed5e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "2fef48542af5f9c6b30e3365ac79356f3cd552885ecc1047e887693cfc7613c6",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2016-04-27T09:36:43Z",
    "title_canon_sha256": "96e9ae1d40053457531fe65ecdba263ba39ceb1f784e0691a94fdddf867d0172"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1604.07993",
    "kind": "arxiv",
    "version": 2
  }
}