Pith Number

pith:S4NFJDX3

pith:2017:S4NFJDX3R5TY5LFW7CH2D7GZ4W

not attested not anchored not stored refs pending

On Metropolis Growth

Syed Amaar Ahmad

arxiv:1712.02937 v2 · 2017-12-08 · physics.soc-ph · econ.EM

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{S4NFJDX3R5TY5LFW7CH2D7GZ4W}

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	2026-05-18T00:27:56.720846Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

971a548efb8f678eacb6f88fa1fcd9e5a09d25b4a968d435afba46dfd25560d9

Aliases

arxiv: 1712.02937 · arxiv_version: 1712.02937v2 · doi: 10.48550/arxiv.1712.02937 · pith_short_12: S4NFJDX3R5TY · pith_short_16: S4NFJDX3R5TY5LFW · pith_short_8: S4NFJDX3

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/S4NFJDX3R5TY5LFW7CH2D7GZ4W \
  | 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: 971a548efb8f678eacb6f88fa1fcd9e5a09d25b4a968d435afba46dfd25560d9

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3423467f7f16bccf3d539e2178296f71d9a4a8ef180597da68a1a79e12cd0b56",
    "cross_cats_sorted": [
      "econ.EM"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2017-12-08T04:46:30Z",
    "title_canon_sha256": "7aac18d54e93c50984172e88b51bc4dbc35b66b8395b0642d4e6f0fb39e4504c"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1712.02937",
    "kind": "arxiv",
    "version": 2
  }
}