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 0x35ffbb14776d2f3d95baa5f7e00886cad7d28ba8a8ddc755c7cc45e77546396a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4ea7804c-cf96-475b-9db6-4f307dd6b337.json and https://artists.proofprofile.net/proofs/artist/4ea7804c-cf96-475b-9db6-4f307dd6b337.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Island Life (Music from Animal Crossing: New Horizons)
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 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. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp 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 0xc0a395aae0981bcc0d315d6d9ef80f2205e77ef5fba6a21fbd98d1e311f123e1. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32159305 — a six-check JSON result.
Zora's Domain (From "The Legend of Zelda: Breath of the Wild")
Rusty Bucket Bay (From: "Banjo Kazooie")
Lurelin Village (From "The Legend of Zelda: Breath of the Wild")
Cloud Cuckooland Central Cavern (From "Banjo Tooie")
Abandoned North Mine (From "The Legend of Zelda: Breath of the Wild")
The Star Festival (From "Super Mario Galaxy")
Temple of Time (From "The Legend of Zelda: Breath of the Wild")
Hailfire Peaks: Icy Side (from "Banjo Tooie")
The Frostlands (from "Octopath Traveler")
Click Clock Wood - Winter (From: "Banjo Kazooie")
Freezy Flake Galaxy (From: Super Mario Galaxy 2)
Gruntilda's Lair (From: "Banjo Kazooie")
Starship Mario (From: "Super Mario Galaxy 2")
Peaches (From "The Super Mario Bros. Movie") [String Quartet Version]
The Forgotten (Abyss) (From "Fire Emblem: Three Houses")
Beware of Forest's Mushrooms (From: "Super Mario RPG")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a98bde7bb5c4e3625fd7217bd43565b65f254dbdf7674e9fece5e4877fbd598. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32302217 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4701a8a0d8623b7e7d875e0144c1845242e9faee8c73651d529b2177e7421. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32328868 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743b31d1b163fa901e97ae6352e3db963f0bdc732802fdd9ec7edeb40702cd58. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32206922 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47cceb35debd1091d445efe6a41f990860693a1fe53109848e76e26bf0c71d4. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32198569 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9bbfdd605dd076b6f9f0f658461f202f83de32f6d7389edd32de47663c351e6. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32328869 — a six-check JSON result.
Frappe Snowland (from "Mario Kart 64") - Chill Funk Version
The Somniel (From: "Fire Emblem Engage")
Obsidian Fieldlands (From: "Pokémon Legends: Arceus")
Mumbo's Mountain (From: "Banjo Kazooie")
Harv's Island (Day) (From "Animal Crossing: New Horizons")
Landmarks of Hyrule (Music from The Legend of Zelda: BotW and TotK)
Hailfire Peaks: Fire Side (From: "Banjo Tooie")
Snow Road and Shiver Mountain (From: "Paper Mario")
Princess Peach's Castle (from: "Super Mario 64")
Memories of You (from: "Persona 3 Reload")
Color Your Night (from: "Persona 3 Reload")
Cheep Cheep Beach (from: "Mario Kart World")
Rogueport (from: "Paper Mario: The Thousand-Year Door")
Full Moon Full Life (from: "Persona 3 Reload")
A Cyber's World (from "Deltarune Chapter 2") - Band Cover
A Cyber's World (from "Deltarune Chapter 2") [Band Cover]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fb0f2886c72225d16a0b7114855f389e641228c5731793d0482f1c26d20c4b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32116065 — a six-check JSON result.
Field of Hopes and Dreams (from "Deltarune")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1bfec83e7e1456199fc9b36a345015d3d39ea5de722d5e1449bfd3eb5f75b3. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32230562 — a six-check JSON result.
Wings That Cross Time (from "Chrono Trigger") - Funk Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa4ba26a7e0e3dc73eddb9e1698bebf41527c2be8ccb22afda505b3b3f6134a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32326918 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa6c7741bc70c629468e77821d199783c1a99e69fcfc140976f57045dd86b86. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32336450 — a six-check JSON result.
Oceanic Museum (from "Pokémon Ruby, Sapphire & Emerald")
Mauville Melodies: A Jazz Tribute to Pokémon RSE
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41bae177f28393b453787e6ed046728f59862724f14349a8cd951e9d5853524a. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32178604 — a six-check JSON result.