Pith Number

pith:RB3MWWZN

pith:2021:RB3MWWZNMBDEJKSP4QU2FCDPDW

not attested not anchored not stored refs pending

Pricing and Hedging Prepayment Risk in a Mortgage Portfolio

Cornelis W. Oosterlee, Emanuele Casamassima, Frank A. Mulder, Lech A. Grzelak

arxiv:2109.14977 v2 · 2021-09-30 · q-fin.RM · q-fin.CP

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

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{RB3MWWZNMBDEJKSP4QU2FCDPDW}

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	2026-07-05T03:22:24.147358Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

8876cb5b2d604644aa4fe429a2886f1da912d1f939e25d2f0fe2ba59337e85ba

Aliases

arxiv: 2109.14977 · arxiv_version: 2109.14977v2 · doi: 10.48550/arxiv.2109.14977 · pith_short_12: RB3MWWZNMBDE · pith_short_16: RB3MWWZNMBDEJKSP · pith_short_8: RB3MWWZN

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/RB3MWWZNMBDEJKSP4QU2FCDPDW \
  | 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: 8876cb5b2d604644aa4fe429a2886f1da912d1f939e25d2f0fe2ba59337e85ba

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "ac22a0102205df4a80d488640af0ed619dccb16fc6a08cdc8cc2573332f1face",
    "cross_cats_sorted": [
      "q-fin.CP"
    ],
    "license": "http://creativecommons.org/licenses/by/4.0/",
    "primary_cat": "q-fin.RM",
    "submitted_at": "2021-09-30T10:11:51Z",
    "title_canon_sha256": "8bbdd6cc6b29979db71bd6ebaa051c9d141cad2336d3e0070ab41937ca363507"
  },
  "schema_version": "1.0",
  "source": {
    "id": "2109.14977",
    "kind": "arxiv",
    "version": 2
  }
}