Pith Number

pith:WGU5IV7M

pith:2020:WGU5IV7MF32ZHGBHQHQGV227KP

not attested not anchored not stored refs pending

Can an Algorithm be My Healthcare Proxy?

Duncan C McElfresh, John P Dickerson, Kendra Griesman, Neil Sehgal, Samuel Dooley, Tyler Will, Weiqin Wang, Yuan Cui

arxiv:2001.09742 v1 · 2020-01-07 · 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{WGU5IV7MF32ZHGBHQHQGV227KP}

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	2026-07-05T00:36:03.114433Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

b1a9d457ec2ef593982781e06aeb5f53ce3b66dda60174be2326e38be6840ccc

Aliases

arxiv: 2001.09742 · arxiv_version: 2001.09742v1 · doi: 10.48550/arxiv.2001.09742 · pith_short_12: WGU5IV7MF32Z · pith_short_16: WGU5IV7MF32ZHGBH · pith_short_8: WGU5IV7M

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/WGU5IV7MF32ZHGBHQHQGV227KP \
  | 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: b1a9d457ec2ef593982781e06aeb5f53ce3b66dda60174be2326e38be6840ccc

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b654b0e73e255b8eef90a965a331268bee37119c9ad9b7e762d341ae6b8f0b75",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "cs.CY",
    "submitted_at": "2020-01-07T13:31:38Z",
    "title_canon_sha256": "c2065c1f061be57dadbdba9911dbfb57d1705a13fd8ebcc3bb36033d8eb1d736"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2001.09742",
    "kind": "arxiv",
    "version": 1
  }
}