#Bitcoin is the supreme collateral for:

1) being the first and most relevant asset that can be publicly proven control, without cost or intermediaries, with message signature;

2) address balances can also be consulted by anyone, at no relevant cost, proving unfaithful deposit in case of breach of contract;

3) smart contracts are possible with balance movement conditions/terms, such as timelock;

4) collective control of addresses being possible by arrangements such as “Shamir secret sharing scheme” or multisig - enabling collective control by consensus (3 of 3, 5 of 5) or automated election of arbitrators (2 of 3, 3 of 5 or 5 of 7);

5) by bitcoin's immunity to capital controls, expropriation and dilution properties.