Pith Number

pith:T62MLSSR

pith:2012:T62MLSSRO4A4BZHV4A5BL2QFMA

not attested not anchored not stored refs pending

The Dynamics of Nestedness Predicts the Evolution of Industrial Ecosystems

Cesar A. Hidalgo, Charles Gomez, Ricardo Hausmann, Sebastian Bustos

arxiv:1203.3796 v2 · 2012-03-16 · physics.soc-ph · physics.data-an

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{T62MLSSRO4A4BZHV4A5BL2QFMA}

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	2026-05-18T01:58:06.561537Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

9fb4c5ca517701c0e4f5e03a15ea056028ca0b6242cea6e96af750843e11d3b8

Aliases

arxiv: 1203.3796 · arxiv_version: 1203.3796v2 · doi: 10.48550/arxiv.1203.3796 · pith_short_12: T62MLSSRO4A4 · pith_short_16: T62MLSSRO4A4BZHV · pith_short_8: T62MLSSR

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/T62MLSSRO4A4BZHV4A5BL2QFMA \
  | 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: 9fb4c5ca517701c0e4f5e03a15ea056028ca0b6242cea6e96af750843e11d3b8

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "4c349328d33758b2ebdd25e402c5f09c8d62478f3071c8960416064d52e1db93",
    "cross_cats_sorted": [
      "physics.data-an"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "physics.soc-ph",
    "submitted_at": "2012-03-16T19:54:35Z",
    "title_canon_sha256": "2608ec5e7d812e11f891e62c90a2fcd9ff3ee12a551283a051017fbc153e8e1f"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1203.3796",
    "kind": "arxiv",
    "version": 2
  }
}