1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 artist was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c32a74d9152961c9f51cd65ae4106c069933bbd72015e3fa71f034065759129. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9ef128f2-6107-4146-80ed-9b33e870600e.json and https://artists.proofprofile.net/proofs/artist/9ef128f2-6107-4146-80ed-9b33e870600e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Soundscape of Mt.Fuji -Nature Sounds at the foot of Mt.Fuji in early spring-
The sound of snow-melted water near Lake Saiko
Aokigahara Forest in the early morning -Wild bird chirping-
Lake Saiko Bat Cave -Drops falling from the cave ceiling-
Oshino Hakkai -Spring water nurtured by the nature of Fuji.-
Shiraitonotaki Waterfall -Flowing down like a white silk thread-
Water stream near Shiraitonotaki Waterfall
Birds twittering in Saiko Wild Bird Forest Park
The Soundscape of Island Trip -Wave Sounds of Shikinejima Island-
Wave Sounds between the Rocks in Ishijirogawa Beach
Wave Sounds and Birds Chirping in Tomari Beach
Wave Sounds and Birds Singing in Kobama Port
The Soundscape of Island Trip -Nature Sounds of Shikinejima Island-
Sounds of Cicadas nearby a Wooden Tunnel
Pouring Water Sounds at Matsugashita Open-air Hot Spring
Ferry’s Steam Whistle departuring from Nobushi Port
The Soundscape of Headwaters -Nature Sounds of Kosuge Village-
Stream and Birds in Forest near Yagyu Shrine
Water sounds of Japanese Garden, Nipponia Kosuge Village
The Soundscape of Amami Oshima -Nature Sounds of Southern Part-
Wave Sounds with Rolling Stones in Honohoshi Beach
The Soundscape of Amami Oshima -Nature Sounds of Northern Part-
Nature Sounds in Kinsakubaru Forest -The Silence of the Morning-
Nature Sounds in Kinsakubaru Forest -Water Trickling out of Rocks-
Nature Sounds in Kinsakubaru Forest -Cicadas and Birds-
Nature Sounds in Kinsakubaru Forest -Wind and Woodpecker-
Birds and Cicadas at Dawn in Chouun Pass
The Soundscape of Amami Oshima -Nature Sounds of Central Part-
Mt.Yuwan and Halcyon Coromanda Bangsi Birds before Dawn
Water sounds of Wasabida (The Soundscape of Kosuge Village)
Water sounds of Japanese Garden, Nipponia Kosuge Village (The Soundscape of Kosuge Village)
Stream of Konagata (The Soundscape of Kosuge Village)
Stream and Birds in Forest near Yagyu Shrine (The Soundscape of Kosuge Village)
Singing Birds near Kosugenoyu (The Soundscape of Kosuge Village)
Shirasawadaki Waterfall (The Soundscape of Kosuge Village)
Shiraitonotaki Waterfall (The Soundscape of Kosuge Village)
Rain sound in Matsuhimetouge (The Soundscape of Kosuge Village)
Rain in Forest (The Soundscape of Kosuge Village)
Odaki Waterfall (The Soundscape of Kosuge Village)
Mt. Mitsugo and Birds (The Soundscape of Kosuge Village)
Kosugegawa River and Trees (The Soundscape of Kosuge Village)
Kosugegawa River (The Soundscape of Kosuge Village)