Pith Number

pith:SIVF4M5Q

pith:2017:SIVF4M5QM5MLOYJ75NICRCLIQF

not attested not anchored not stored refs pending

Open Algorithms for Identity Federation

Sandy Pentland, Thomas Hardjono

arxiv:1705.10880 v2 · 2017-05-30 · cs.CY

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{SIVF4M5QM5MLOYJ75NICRCLIQF}

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	2026-05-18T00:32:09.865275Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

922a5e33b06758b7613feb50288968814e3ef160e74bcdd7f60add2e0d5ba6f0

Aliases

arxiv: 1705.10880 · arxiv_version: 1705.10880v2 · doi: 10.48550/arxiv.1705.10880 · pith_short_12: SIVF4M5QM5ML · pith_short_16: SIVF4M5QM5MLOYJ7 · pith_short_8: SIVF4M5Q

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/SIVF4M5QM5MLOYJ75NICRCLIQF \
  | 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: 922a5e33b06758b7613feb50288968814e3ef160e74bcdd7f60add2e0d5ba6f0

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "5528ae9e90146c843640739b5f92110ac8cfbb75dfdf7b78d2f45ae49d944513",
    "cross_cats_sorted": [],
    "license": "http://creativecommons.org/licenses/by-nc-sa/4.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2017-05-30T22:24:04Z",
    "title_canon_sha256": "e89d1d3b338a09b03bce6a265935688e24bf08896fb11ab4acb18fc545670385"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1705.10880",
    "kind": "arxiv",
    "version": 2
  }
}