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 0x80639e5ae62861b067015a1d1c9c3f36d06ec1d4358c53a5e2f853934ad5614a. 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/a8092737-5bb6-4704-87ef-67143f9d2572.json and https://artists.proofprofile.net/proofs/artist/a8092737-5bb6-4704-87ef-67143f9d2572.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Dream of the Shore Near Another World [KayThePianist remix]
Eternity Memory Of Lightwaves (FFX-2 Piano)
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 0xbe418a119b10b26229b0b7679ec120fec6224163de4515ff85c572c3e9038ed0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USE830956426 — a six-check JSON result.
Interstellar Medley: Dreaming of the crash / Day One / Main theme / Day One Dark
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24b6bddf0c2889edfb714768ad94e47d03e97d7aa22bf47a10e7757b609639a. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T12:33:53Z), 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/USE831510506 — a six-check JSON result.
Kokoro no Kakera (from "Ni no Kuni") [feat. Renato Barraza & Luke Pickman]
APOCALYPSIS NOCTIS (From "Final Fantasy XV")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1643d26082208c72a579b2d623f4d759948b249ab49d5b040307d2bebcaa2e0e. 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/QZ22B1772459 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf37a03bb56ab504f9d9258e92935e8276ef2aaed2ae27943e1f5a13ad157949. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZ22B1772462 — a six-check JSON result.
In Dreams (From "The Lord of the Rings")
Gerudo Valley (From "Ocarina of Time") [Orchestral Cover]
Dragon Roost Island (From "The Legend of Zelda: The Wind Waker")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba446ffbac0323a4cb6ecf0760aadab2074b7ed26f4d5cdd1f2b9e0bdefa015. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZ22B1846471 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21f153bebf5b10b976a2bfecf6c7300a7efea334d376c20fbcdda7fc15328cf2. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/QZ22B1846473 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e7f0ec11bae758c18a7c5b038ef5266a55d68891524616bd080e14ee95b3b1. Chain 2 (Bitcoin): anchored in block 958882 (2026-07-20T12:45:27Z), 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/QZ22B1846474 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc869272f886121049445dbee8c9397180d8076621254594fed108fb3ebf0d7c5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZ22B1846476 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe10f1011c6cd081454bd932df837534a42a3945cdf43af2a5295c4f3ed41920. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/QZ22B1846479 — a six-check JSON result.
Kingdom Hearts Medley: Simple and Clean / Dearly Beloved
The Magic Flute, K.620: Queen of the Night Aria
Star Wars Medley: The Force Theme / Across the Stars (Piano / Flute Version)
My Quiet Forest Home (From "Octopath Traveler") [Cello and Piano]
Beneath the surface (From "Octopath Traveler") [Flute, Cello and Piano]
Eternity: Memory of lightwaves (From "Final Fantasy X-2")
Melodies of Life (From "Final Fantasy IX")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb8c7159bbbb5d776ed002185ea34a860d7f665c2a9c2a5447d3e65d6a26600. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZGWW2099894 — a six-check JSON result.
Balance is restored (From "Final Fantasy VI")
Disney Classics Piano Medley: Someday my prince will come / Heigh-ho / When you wish upon a star / I've got no strings / Hi-diddle-dee-dee / Toccata and fugue in D minor / Dance of the sugar plum fairy / The sorcerer's apprentice / Le Sacre du Printe
The Bells of Notre Dame (From: "The Hunchback of Notre Dame")
A Mary Poppins Medley: A Spoonful of sugar / Jolly Holiday / Supercalifragilistiexpialidocious / Stay awake / Feed the Birds / Chim Chim Cher-ee / Let's go fly a kite
Cantina Band (From "Star Wars: Episode IV - A New Hope") [4 Hands Piano Version]
Final Fantasy IX - Full Strings mini album
Tribute album: Enya, for Flute and Piano
I do (from "Ghost in the Shell Stand alone Complex")
Piano Medley: You've got a Friend in me / A bug's life / Monsters, Inc / Beyond the sea / The glory days / Life is a highway / Le festin / Put your Sunday clothes / Married life / Touch the sky / Inside out / Homestead / Remember me /CarriedMeWithYou
Easy listening songs for Piano and Flute
YOASOBI - Racing Into The Night - 夜に駆ける - Yoru Ni Kakeru [2 pianos version]
Kay's Destiny (Original Game Soundtrack)
Somewhere out there (From: "An American tail")
The Legend of Zelda Saga Collab - Part 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcc7c35ca1619dcf389e642803091d42f99b1e2bfa6d21d94a11d97eeae42920. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USE830998173 — a six-check JSON result.