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 0x4887238ecda7f4c2baf849348ef76ceca28b2547f97c1447d181324b515fb777. 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/fb8998f6-cf72-4042-89a6-c992486c9beb.json and https://artists.proofprofile.net/proofs/artist/fb8998f6-cf72-4042-89a6-c992486c9beb.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Reunion (From "Final Fantasy VII") [Chamber Ensemble]
Reunion (From "Final Fantasy VII") - Chamber Ensemble
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 0x4b0652247d3e4b19debfbe375b1d123f75d01df8488817f82c345a4b4e06482d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/USE831511255 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cfc866bdb6f33eefee6c377d25b122c39833743575e61130291b14660078fbe. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USE830975183 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2477b8a65803e6452b9b018092b2c797bae07b04f0cc990ca58c42966bfabe1. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/USE830975182 — a six-check JSON result.
Inochi no Kioku (From "The Tale of Princess Kaguya")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18eb3d96d0106ecd70f349be815fc20dfa4ac3f3d2c6706363879630b247f56d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USY281612439 — a six-check JSON result.
Zelda String Quartet (From "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb72fd7f21a2b86998e72a5297178ee36ecc70af4896faf16b95ed53c46d304. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USY281616358 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xace90c679edb5eab9482dd0dc0a8c2051e997224c8b74704dbddab71933332c6. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USY281616361 — a six-check JSON result.
Gusty Garden Galaxy (From "Super Mario Galaxy")
Shifty Boo Mansion (From "Super Mario 3D World")
The Rains of Castamere (from "Game of Thrones")
Rey's Theme (From "Star Wars: The Force Awakens")
Promise of the World (From "Howl's Moving Castle")
Oasis in the Sparkling Sands (From "Octopath Traveler")
Phantom Forest (From "Final Fantasy VI")
Jump Up, Super Star! (From "Super Mario Odyssey")
Krook's March (From "Donkey Kong Country 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49687ec284a28387f864184d121801f220897a88be2c2a934579e2165f6a4a8d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZ22B1943114 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c41988ca3ebdd803ffa231c0d35b5fb0c634c8e52e4cd665026b445dfee8d81. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZ22B1965169 — a six-check JSON result.
Kass' Theme (From "The Legend of Zelda: Breath of the Wild")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7c9ebee5269fa3f7ec14064ad7293c27afdd5b1ed6cbfb883b2fc55ec8f550. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZ22B1979576 — a six-check JSON result.
Primrose, the Dancer (From "Octopath Traveler")
Left Unspoken (From "Breath of Fire II")
Trail of Blood (From "Final Fantasy VII")
Kotake & Koume (From "The Legend of Zelda: Ocarina of Time")
Tressa, the Merchant (From "Octopath Traveler")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86421cc1cc8a5e6190f6cdc2a24af429986409c0655965c23780329d608e3c93. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZ22B2028937 — a six-check JSON result.
Decisive Battle I (From "Octopath Traveler") [Rock Version]
Light of the Seven (From "Game of Thrones")
Flamesgrace, Guiding Light (From "Octopath Traveler")
Cyrus, the Scholar (From "Octopath Traveler")
Yoshi's in the Wind (From "Yoshi's Story")
Goblets and Gauntlets: Tavern Songs from Dragon Age: Inquisition
The Wind Can Be Still (From "Stardew Valley")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b6369b56cea1cc4ecf2f3aabf90fae95831a7d732d96a37987a9131183c4ad. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZ22B2034302 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbeb51bcccc08025e8b78e93cea1b09f08d6a1d42734f274e3c313641ce22d4a. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T05:02:52Z), 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/QZGWW1917626 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4b14456ad7241313b9a2c76a18e6b41065c2d029c8188f87402f652e6ce360f. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZGWW1917627 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e6da8d3e62ef84923670320eb0bbfd81e74674d8bce71032e5e977563160fe. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZGWW1917628 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b00a89a260b97cd53742c11d7c383d21a92ee25d9e3da26fb9bbbec57f4ddde. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZGWW1933210 — a six-check JSON result.
The Color of the Summer Sky (From "Secret of Mana")
The Edge of Dawn (From "Fire Emblem: Three Houses")
A Promise (From "Fire Emblem: Three Houses")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51fe37f7221b2c8fb0d203401a0fa81016686dfa3a72e9d38b6bc48927531e2e. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZGWW1959521 — a six-check JSON result.
Gazing at Sirius (From "Fire Emblem: Three Houses")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa196f56e921bc6fa52a000ba1d7fd6e26d80d7e645c52426d27ccde901b96f0c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGWW1984526 — a six-check JSON result.
Midna's Lament (From "The Legend of Zelda: Twilight Princess")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0051fcfba4122d8dff725960553b8bcdfcfc3eb5fa326246de97450e201b21. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZGWW1992545 — a six-check JSON result.
Dire, Dire Docks (From "Super Mario 64")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894ee8b007576d19cc1837e3dfdbb3c77a83ea5fd84da993f4f51c5af91d96ba. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZGWW1992546 — a six-check JSON result.
Sheik's Theme (From "The Legend of Zelda: Ocarina of Time")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0a6b53f62ebb136d23beb89b5a9d7117c547bea27d90c7efec986998c9df92. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QZGWW1992548 — a six-check JSON result.
Princess Leia's Theme (From "Star Wars")
Valse di Fantastica (From "Final Fantasy XV")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82810a44fa953365659be66ec29f496678946ee1e88c211fb3b9e83ac236c576. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QZGWW2089266 — a six-check JSON result.
Tifa's Theme (From "Final Fantasy VII") [String Quartet]
Jessie's Theme (From "Final Fantasy VII Remake")
Frosty Village (From "Diddy Kong Racing")
Memories of Hyrule (Music from The Legend of Zelda: Breath of the Wild)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7740c7874b174ce94798f8bf83cc857b9d0bc9fed548ed8029e4aa5afaf7d1a0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZGWX2110268 — a six-check JSON result.
Emil / Sacrifice (From "NieR") [String Quartet]
Zelda's Lullaby (From "The Legend of Zelda") [Violin and Piano]
Zelda's Lullaby (From "The Legend of Zelda") - Violin and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8535d9cc805652b1016cb340c3682c204f289c9e1321cca65d750a5ac747ed9c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZGWX2215302 — a six-check JSON result.
Skyloft (From "The Legend of Zelda: Skyward Sword") [String Cover]
Face Shrine (From "The Legend of Zelda: Link's Awakening") [Neo-Baroque Cover]
Face Shrine (From "The Legend of Zelda: Link's Awakening") - Neo-Baroque Cover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa87aa359b1fee88de62627e9adcb35819452da692f50e7b104abefa59feeb1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZPJ32107511 — a six-check JSON result.
Seymour's Theme (From "Final Fantasy X") [Hybrid Orchestral Cover]
Shadowlord (From "NieR Gestalt & Replicant") [String Quartet]
Merry-Go-Round of Life (From "Howl's Moving Castle") [Violin and Piano]
Freezy Flake Galaxy (From "Super Mario Galaxy 2") [Violin Cover]
Vanille's Theme (From "Final Fantasy XIII") [Violin and Piano]
Final Fantasy: Main Theme (String Quartet)
Hilda's Theme (From "The Legend of Zelda: A Link Between Worlds") [Strings and Harp]
Wishing on a Star Piece: Music from Super Mario RPG
Deku Palace (From "The Legend of Zelda: Majora's Mask") [Folk Cover]
Fleeting Words (From "NieR Replicant") [Violin and Piano]
Fleeting Words (From "NieR Replicant") - Violin and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164dbc8f45121cb1803fdc177804a48c1b8881dee028285da1fc1eaa771d4ee5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZPJ32157238 — a six-check JSON result.
On the Fallen Arm (From "Xenoblade Chronicles") [Violin, Cello, and Piano cover]
Hyrule Field (From "The Legend of Zelda: Twilight Princess") [String Quartet]
Once We Part Ways (From "Xenoblade Chronicles") [Orchestral Cover]
The Goddess Smiles (From "Triangle Strategy") [Chamber Strings Version]
Stab the Sword of Justice (From "Star Ocean the Second Story") [String Ensemble Version]
Dear to the Heart: Music from Final Fantasy VII
Voices in the Dark: Music from Final Fantasy VII
Life at Garreg Mach Monastery (From "Fire Emblem: Three Houses") [Violin Cover]
Costa del Sol (From "Final Fantasy VII") [Violin Cover]
The Legend of Zelda: Main Theme (String Quartet)
Lumière (From "Clair Obscur: Expedition 33") [Strings Cover]
Alicia (From "Clair Obscur: Expedition 33") [Violin Version]
Between Earth and Sky (Music from "Chrono Trigger")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c885261d52f37c3d1ed00e6f91ad207969584ce5f0361727af24b0cb54e4f46. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZ6K41900350 — a six-check JSON result.
Resurrection of the Night: Alucard's Elegy (Music from "Castlevania: Symphony of the Night")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cfe9a591f18022641b403ff12ebe88110f9b1db73bf34fda0647109860754c. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZ6K41900182 — a six-check JSON result.