Bitcoin
A draft BIP would standardise which Bitcoin outputs expose their keys
Published estimates of quantum-exposed supply range from about 25% to over 34%. The author argues the gap is definitional and proposes four levels with a fail-closed rule.
Coin Brief — Crypto news, read from the protocol's own record
A BIP-352 reference fix stops the silent-payments test asserting on nothing
The change guards an assertion in the silent-payments reference code so it only runs when the optional expected value is present, instead of dereferencing a None.
EIP-8360 proposes TCREATE, a contract that exists for one transaction
A draft opcode would create contracts that live only for the duration of a single transaction; the latest update clarifies ephemeral-account semantics and fixes its EIP references.
Agave 4.3.0 ships stable, carrying the first pieces of the Votor transport
The validator release adds vote-commission CLI commands and improves send-error stats in votor-transport — the plumbing behind the Alpenglow consensus change now landing in a mainnet-suitable build.
Bitwise updates its XRP ETF prospectus; the filing is not approval
A 21 September post-effective amendment on Form POS AM refreshes disclosures for Bitwise's XRP ETF trust and registers zero new shares — a maintenance filing, not an SEC green light or a launch.
Cardano's node release trims memory in time lock scripts
cardano-node 11.1.2 optimises memory in time lock scripts. The release notes keep two known regressions against 11.0.1 in view rather than claiming the problem is closed.
The XRP Ledger server ships two amendments and retires a third
rippled 3.4.0 adds closed-ended vaults and cash-basis accounting to the lending protocol, bundles amendment-gated fixes, and makes an earlier AMM fix permanent.
A release candidate is not news, and a forum thread is not a decision
Crypto desks are fed by repositories and forums, which produce a great deal of motion and very little event. Four tests for telling one from the other.
The Eurosystem starts settling tokenised assets in central bank money
Pontes went live on 21 September with a first group of participants already onboarded; the ECB will also put a slice of its own funds into tokenised securities, settled through it.
BIP-374 now reduces its challenge modulo the curve order
The discrete log equality proof spec went to version 0.3.0: the challenge is reduced mod n on generation, a verifier must reject e above the order, and test vectors cover both cases.
Four EIPs dropped out of the Hegotá proposal list after one call
The meta EIP for the next Ethereum upgrade was rewritten on 21 September with the decisions from All Core Devs Consensus 187: four proposals declined, one promoted, one added.