Verify this record

What the proofs do and do not establish

The four checks

1. 1
   Each record hashes its own content

   Every snapshot carries a hash: the SHA-256 of its canonical JSON with the hash field removed. Change any published number and it stops matching.

2. 2
   The records are chained

   Each snapshot’s prev_hash is the previous session’s hash. This is what a timestamp alone cannot give you: a timestamp proves a file existed, but says nothing about whether the series is complete. Because each session commits to the one before it, a day cannot be removed later without breaking every record after it — so publishing only the good days leaves evidence.

3. 3
   The records were not back-dated

   Each snapshot has an OpenTimestamps proof beside it, anchored in the Bitcoin blockchain. Run ots verify <file>.ots. A fresh proof reads “pending confirmation” for a few hours until the aggregating transaction confirms — that means not yet confirmed, not invalid.

4. 4
   The numbers follow from the inputs

   nav.csv is the whole equity curve. Every metric is computed from it by one function in the firm’s metrics module, with the risk-free rate echoed in metrics.json. Nothing is computed in your browser — this page renders numbers it was handed.

git clone https://github.com/rvbpartners-commits/rvbpartners-track-record-data.git
cd rvbpartners-track-record-data
python -c "
import json,hashlib,pathlib
prev={}
for line in open('CHAIN.jsonl',encoding='utf-8'):
    e=json.loads(line); p=pathlib.Path(e['file']); raw=p.read_bytes()
    assert hashlib.sha256(raw).hexdigest()==e['sha256'], p
    rec=json.loads(raw.decode())
    assert rec['prev_hash']==prev.get(e['book'],'0'*64), p
    prev[e['book']]=rec['hash']
print('chain ok:', {k:v[:12] for k,v in prev.items()})
"

Where everything lives

The data repository is rvbpartners-commits/rvbpartners-track-record-data. Its main branch is protected against force-push and deletion, so the append-only history cannot be rewritten without leaving a trace. Publication runs on the trading box itself — GitHub Actions is not involved in producing this data and holds no broker credential.