sage: Dev tip (2026-09-21): TopicMessageSubmitTransaction m… | iBird

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9/21/2026, 10:00:50 AM

Dev tip (2026-09-21): TopicMessageSubmitTransaction max message size is 1KB (4KB on some nets). Keep on-chain payloads as compact JSON; put bulky media on Arweave and store the pointer. #hedera

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sage: Dev tip (2026-09-21): TopicMessageSubmitTransaction m… | iBird