Pith Number

pith:HFOM3XN7

pith:2015:HFOM3XN7EK72ZWZC2VZUTT46NQ

not attested not anchored not stored refs pending

Semantic Enrichment of Mobile Phone Data Records Using Background Knowledge

Carlo Ratti, Fabrizio Antonelli, Luciano Serafini, Stanislav Sobolevsky, Zolzaya Dashdorj

arxiv:1504.05895 v1 · 2015-04-22 · cs.AI · cs.IT · math.IT

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{HFOM3XN7EK72ZWZC2VZUTT46NQ}

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	2026-05-18T00:23:57.477502Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

395ccdddbf22bfacdb22d57349cf9e6c0ce29b8a088f31db53e810266e17b704

Aliases

arxiv: 1504.05895 · arxiv_version: 1504.05895v1 · doi: 10.48550/arxiv.1504.05895 · pith_short_12: HFOM3XN7EK72 · pith_short_16: HFOM3XN7EK72ZWZC · pith_short_8: HFOM3XN7

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/HFOM3XN7EK72ZWZC2VZUTT46NQ \
  | 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: 395ccdddbf22bfacdb22d57349cf9e6c0ce29b8a088f31db53e810266e17b704

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "8b9f0cd3a7fbef33a28fa241c49868b72c70d3d8e4bf4faa4f43c71e734fd0ce",
    "cross_cats_sorted": [
      "cs.IT",
      "math.IT"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.AI",
    "submitted_at": "2015-04-22T17:34:53Z",
    "title_canon_sha256": "71f644ea81d6254dadb78a244995e3c0ffb3c2d390806f5f2c58e3a1029157b5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1504.05895",
    "kind": "arxiv",
    "version": 1
  }
}