Sky garden may refer to: 20 Fenchurch Street sky garden, an indoor garden atop a skyscraper in the City of London financial district Meguro Sky Garden, a roof garden park in Tokyo Seoul Skygarden,
1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x559241c3a66e77f7582462e371dc9e69e1e42aa4d391fa5674196c59446596e5. Chain 2 (Bitcoin): anchored in block 954615 (2026-06-20T22:44:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5949b68-4808-4b98-b511-b4ff0ae020b5.json and https://artists.proofprofile.net/proofs/artist/c5949b68-4808-4b98-b511-b4ff0ae020b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).