Pith Number

pith:PPBCIHZV

pith:2011:PPBCIHZVRWG6UEXCVET3TWA57N

not attested not anchored not stored refs pending

Abnormality of the placental vasculature affects placental thickness

Barbara Eucker, Carolyn M. Salafia, Danielle Haas, John Thorp, Michael Yampolsky, Oleksandr Shlakhter

arxiv:1101.1892 v1 · 2011-01-10 · q-bio.TO

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{PPBCIHZVRWG6UEXCVET3TWA57N}

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	2026-05-18T04:31:51.626060Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

7bc2241f358d8dea12e2a927b9d81dfb642dd7f2a5874dd63d11fbb63cd2e501

Aliases

arxiv: 1101.1892 · arxiv_version: 1101.1892v1 · doi: 10.48550/arxiv.1101.1892 · pith_short_12: PPBCIHZVRWG6 · pith_short_16: PPBCIHZVRWG6UEXC · pith_short_8: PPBCIHZV

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/PPBCIHZVRWG6UEXCVET3TWA57N \
  | 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: 7bc2241f358d8dea12e2a927b9d81dfb642dd7f2a5874dd63d11fbb63cd2e501

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "b339a40d2e3467f395ef9c130f0bc31df3e0f9aef592c4a634bcdf9dac3a27b3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "q-bio.TO",
    "submitted_at": "2011-01-10T17:21:26Z",
    "title_canon_sha256": "d3ebbcc31515ffdd5e8976145c25dd9218ad8464c11626ac3d227c635951607b"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1101.1892",
    "kind": "arxiv",
    "version": 1
  }
}