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
Five open XRPL standards changes move the spec toward the code, not the other way round
Open pull requests sync XLS-86, XLS-78 and XLS-65 with their reference implementations, align an XLS-85 error code from tecFROZEN to tecLOCKED, and pin byte order in XLS-102.
Avalanche's Helicon upgrade set a hard mainnet deadline and moved every node to plugin version 46
The avalanchego release schedules Helicon activation for 11 AM ET on 22 September and states that all mainnet nodes must upgrade before it; the same release line carries Granite on Fuji.
SIMD-0215 records a 2^81 collision attack on the accounts hash and explains why it cannot be built
The proposal now states that a published analysis puts a collision below 2^128 queries, and that the colliding sets would need more accounts than a valid ledger state can contain.
BIP-138 widens its recipient set to every distinct key in the backup payload
The merged change redefines the keys used by the wallet-account backup scheme: distinct public keys across all descriptor and policy sets and all content items, rather than one descriptor's keys.
EIP-8298 drops the runtime-only restriction on SETCODEFROM and lets initcode use it
The instruction sets the calling account's code hash to that of a source account with existing deployed code; the update removes the wording that confined it to runtime.
Fed opens comment on two stablecoin rules and puts full reserve backing in the first one
The proposals build the supervisory framework for Board-supervised payment stablecoin issuers under the GENIUS Act; permissible reserves are named as short-term Treasury bills and other high-quality liquid assets.
The Solana Foundation hires a strategy chief and a payments GM
Rachel Conlan becomes Chief Strategy Officer and Jamal Raees General Manager of Payments, as the foundation points at $5 trillion of 2026 stablecoin volume.
Four chains spent today deleting things
A Bitcoin clause, Ethereum's refunds and bloom filters, a Solana failure ordering, an XRPL reporting gap. Today's protocol work was subtraction and clarification.
A standard would let the XRP Ledger escrow issued tokens, not just XRP
XLS-85d extends EscrowCreate, EscrowFinish and EscrowCancel to IOU and MPT assets with new ledger fields for locked balances.
Cosmovisor 1.7.3 exists only to ship the binaries 1.7.2 forgot
The previous release fixed a Go 1.26 build failure but published no prebuilt binaries for it.