DynamicPyramid Contract Verification

Byte-for-byte verified creation bytecode for the DynamicPyramid contract deployed on Ethereum mainnet.

Contract

• Address: 0xa9e4e3b1da2462752aea980698c335e70e9ab26c
• Deployed: February 23, 2016 (block 1,049,304)
• Deployer: 0xe5478bbde21a0a38401a4e9cc57cfd11dec15b66
• ETH locked: 37 ETH (participants still awaiting payout)
• Creation bytecode: 2,549 bytes

Compiler

Two compiler builds both produce an exact byte-for-byte match:

1. soljson-v0.2.0-nightly.2016.1.20+commit.67c855c5.js — JS/emscripten nightly build (January 20, 2016), optimizer ON
2. solc v0.2.0 native C++ (webthree-umbrella v1.1.2), optimizer ON

The JS soljson nightly from January 20, 2016 reproduces the exact on-chain bytecode. This is a nightly pre-release of v0.2.0, built with emscripten, available from the Solidity binaries repository.

Verification (soljson nightly — recommended)

# Download the soljson nightly
curl -O https://binaries.soliditylang.org/bin/soljson-v0.2.0-nightly.2016.1.20+commit.67c855c5.js

# Compile with solc-js
npx solc-js --solc-path ./soljson-v0.2.0-nightly.2016.1.20+commit.67c855c5.js --optimize --bin DynamicPyramid.sol

# Compare the output against onchain-creation.hex

Or run the included verification script:

chmod +x verify.sh
./verify.sh

Verification (native C++ — alternative)

# Build the Docker image first (one-time)
docker build -t solc-umbrella https://raw.githubusercontent.com/cartoonitunes/doubler-verification/main/Dockerfile

# Compile with native C++ solc
docker run --rm -v "$(pwd):/src" solc-umbrella sh -c \
  "cd /src && /umbrella/build/solidity/solc/solc --optimize --bin DynamicPyramid.sol"

Contract Behavior

A self-adjusting pyramid scheme that changes payout multipliers as participation grows, designed to extend its lifespan.

• Entry: 1 ETH minimum (smaller amounts go to fees without entering the pyramid)
• Initial multiplier: 3x (receive 3 ETH when paid out)
• At 10 participants: multiplier drops to 2x
• At 25 participants: multiplier drops to 1.5x
• Fee: 10% (halved to 5% for deposits of 50+ ETH)
• Total participants: 140 (as of final state)
• Still waiting for payout: 136 participants

Key Finding

The contract ran out of funds before completing its payout queue. 136 of 140 participants are still waiting. 37 ETH remains locked, not enough to cover the remaining obligations. The creator (0xe5478b...) extracted fees but left participants waiting.

The soljson nightly v0.2.0-nightly.2016.1.20+commit.67c855c5 produces an exact bytecode match — previously only the native C++ build was confirmed. Both compiler routes are now verified.

Links

• EthereumHistory.com
• awesome-ethereum-proofs
• Sourcify