Pith Number

pith:TJDIK46O

pith:2015:TJDIK46OJKLYTCNUTHHJ4KEKE3

not attested not anchored not stored refs pending

Visualizing signatures of human activity in cities across the globe

Carlo Ratti, D\'aniel Kondor, Istv\'an G\'odor, Pierrick Thebault, Sebastian Grauwin, Simon Moritz, Stanislav Sobolevsky

arxiv:1509.00459 v1 · 2015-09-01 · 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{TJDIK46OJKLYTCNUTHHJ4KEKE3}

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	2026-05-18T01:34:14.039942Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9a468573ce4a978989b499ce9e288a26dd96ed9bbbc758852c6cf53e70585a5a

Aliases

arxiv: 1509.00459 · arxiv_version: 1509.00459v1 · doi: 10.48550/arxiv.1509.00459 · pith_short_12: TJDIK46OJKLY · pith_short_16: TJDIK46OJKLYTCNU · pith_short_8: TJDIK46O

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/TJDIK46OJKLYTCNUTHHJ4KEKE3 \
  | 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: 9a468573ce4a978989b499ce9e288a26dd96ed9bbbc758852c6cf53e70585a5a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "e905063fe0d5897063cfebce8d6eb3350d8653710d25796cf7590b0f149e4b89",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.SI",
    "submitted_at": "2015-09-01T19:47:37Z",
    "title_canon_sha256": "1df8e3326b0bfd5c3f943ee31575271a804d9a02dcc58cba75e22bf7ada04f01"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1509.00459",
    "kind": "arxiv",
    "version": 1
  }
}