Release Notes 2026.10

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Amendments

New amendments. See Amendments for full descriptions.

Amendment	Type	Default Vote	ID
RNG	Feature	No	`A482912CE1E7026F8BC5F63F5A2394768455B71CD8117104F4BFE3A7EAE1AA45`
PWALoader	Feature	No	`B2A89FF11F11AC4DBBA803492F47BBBAA5144CF3270FA030E0489814BB1AC86B`
OnChainManifests	Feature	No	`68348F3451254D4AB206603B962241ADCFC1B22E945B59B5474F5DFBE3A5DE7C`
EscrowDestinationCancel	Feature	No	`B8DE07B4A417D9AE2F6DD903B9F8ED785C8C63A7311E8B7504DD6158E7336377`
HookOnV2_1	Feature	No	`D8FF47221FD426458D7EAE70FA439F4D5E59ECAB7292FC14931FBD8C34904602`

Changes to existing amendments:

Amendment	Change
`HookOnV2`	No longer supported. Replaced by `HookOnV2_1`. Validators that voted for it lose that vote and should vote for `HookOnV2_1` instead.
`AMMClawback`	No longer supported (AMM itself was already unsupported).
`fixXahauV1`, `fixXahauV2`, `fix240911`	Retired. Their pre-amendment code paths are removed, and they are removed from `xahaud-standalone.cfg`.

New Transaction Types

Name	Type Code	Amendment	Notes
Entropy	89	RNG	Pseudo-transaction. Validators only.
SetManifest	91	OnChainManifests	Unsigned, canonical envelope. Submit with `submit` and `manifest`.

Changed: AccountSet gains the optional AppLoader field (PWALoader). EscrowCancel can be submitted by the destination at any time (EscrowDestinationCancel). SetHook validates HookOnIncoming/HookOnOutgoing more strictly (HookOnV2_1).

New Ledger Entry Types

Name	Type Code	Amendment	`ledger_entry` Selector
AppLoader	`0x004C`	PWALoader	`app_loader` (r-address)
Manifest	`0x004D`	OnChainManifests	by index
Random	`0x526E`	RNG	`random: true`

Changed: AccountRoot gains the optional fields AppLoaderSequence and ManifestID.

New Fields

Field	Type	Code	Hook `sf` Constant	Notes
`EntropyCount`	UInt16	99	`(1<<16)+99`
`EntropyDenominator`	UInt16	100	`(1<<16)+100`
`AppLoaderSequence`	UInt32	101	`(2<<16)+101`
`NextRandomDigest`	Hash256	89	`(5<<16)+89`
`RandomData`	Hash256	90	`(5<<16)+90`	Never written to ledger-object metadata. It does appear in transaction metadata of transactions whose Hooks drew random numbers.
`ManifestID`	Hash256	91	`(5<<16)+91`
`AppLoader`	Blob	96	`(7<<16)+96`
`RandomDigestEntry`	STObject	88	`(14<<16)+88`	Inner object: `PublicKey`, `NextRandomDigest`, `LedgerSequence`.
`Manifest`	STObject	90	`(14<<16)+90`
`RandomDigests`	STArray	91	`(15<<16)+91`	Never written to metadata.

New Transaction Result Codes

Code	Description
`tefPAST_MANIFEST_SEQ`	The submitted manifest’s sequence is not newer than the current one.
`tefREVOKED_MANIFEST`	The submitted manifest is for a revoked master key.
`tefMANIFEST_KEY_IN_USE`	A key the submitted manifest names is already in use by another manifest.
`telMANIFEST_FEE_MISMATCH`	The unsigned SetManifest fee is not, or cannot be confirmed as, canonical for this server’s ledger fee settings.

Hook API

New functions:

Function	Amendment
`int64_t dice(uint32_t sides)`	RNG
`int64_t util_random(uint32_t write_ptr, uint32_t write_len)`	RNG

Hook Constants

Constant	Value	Amendment
`TOO_LITTLE_ENTROPY`	return code -46	RNG
`KEYLET_MANIFEST`	`util_keylet` keylet type 37	OnChainManifests

The Hook SDK headers (hook/extern.h) are now generated directly from hook_api.macro, which carries named parameters for every function.

RPC Methods and Parameters

Method	Role	New or Changed
hook_validate	user (if enabled)	New
pwa_validate	user	New
pwa_info	admin	New
account_info	user	New `hooks` parameter
server_definitions	user	New `HOOK` section; `ledger_enabled` per feature
`submit`	user	New `manifest` parameter (see SetManifest)
`ledger_entry`	user	New `random` and `app_loader` selectors

Configuration

Section or Key	Default	Documentation
`[udp_highway]`	`0`	UDP Superhighway
`[early_manifest_sync]`	`1`	Early Manifest Sync
`[hook_validate_rpc]`	`0` (`1` in standalone)	Hook Validation RPC
port `protocol = pwa`, with keys `domain`, `custom_domains`, `resolver`	—	Serving PWA Apps
`[pwa_allowlist]`, `[pwa_blocklist]`	empty	Serving PWA Apps
`[node_db] type=rwdb` rules	changed	Running Databases in Memory

The example configuration’s comments now document the real defaults of [transaction_queue] target_txn_in_ledger (1000) and [max_transactions] (1000).

Node Operator Behaviour

Amendment-blocked servers stop instead of running degraded, and write a README_AMENDMENT_BLOCKED receipt to the config directory. See Updating xahaud.
UNLReport reliability: UNLReport generation is no longer blocked by the Negative UNL local reliability gate. See Enabling Validation.
Boost is updated to 1.91.
Build fixes for clang-16 and for ARM (embedded tests hanging).