Pith Number

pith:FNXRYYNL

pith:2012:FNXRYYNLFDWEKDGYGEZPPHANDK

not attested not anchored not stored refs pending

Computing Maximal Chains

Alberto Marcone, Antonio Montalb\'an, Richard A. Shore

arxiv:1201.4408 v1 · 2012-01-20 · math.LO · math.CO

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

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	2026-05-18T03:34:16.356763Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

2b6f1c61ab28ec450cd83132f79c0d1a9d4f83bc2e88b04bb9bbb4c23cf5fc0e

Aliases

arxiv: 1201.4408 · arxiv_version: 1201.4408v1 · doi: 10.48550/arxiv.1201.4408 · pith_short_12: FNXRYYNLFDWE · pith_short_16: FNXRYYNLFDWEKDGY · pith_short_8: FNXRYYNL

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/FNXRYYNLFDWEKDGYGEZPPHANDK \
  | 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: 2b6f1c61ab28ec450cd83132f79c0d1a9d4f83bc2e88b04bb9bbb4c23cf5fc0e

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "3fcaeaa3a3b882652dd1348485983e87a591cb69b2c20fe5507f688f21d5570c",
    "cross_cats_sorted": [
      "math.CO"
    ],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "math.LO",
    "submitted_at": "2012-01-20T22:49:37Z",
    "title_canon_sha256": "9793841e4df5808ba0bf71191efbfec0be02510356719400b581f6cebcc425a5"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1201.4408",
    "kind": "arxiv",
    "version": 1
  }
}