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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb466b7d2b2ea10cf900dc23cf2fd1076b2182c5e33f2abf476c0b60b6548137c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0e18845c-ed2c-4665-86d3-78b86f8205ec.json and https://artists.proofprofile.net/proofs/artist/0e18845c-ed2c-4665-86d3-78b86f8205ec.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Undertale: Strings of Determination Vol. 1
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3eab109bd59feb26d2e3a4e6eb2cf3ed96af1c6ef1854580b3e71de14fa942. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1797273.
Prelude (From "Final Fantasy") [2018 Version]
My Quiet Forest Home (From "Octopath Traveler")
Age of Oppression (from "The Elder Scrolls V: Skyrim")
Flying Over Finis (From "Animal Crossing" & "Octopath Traveler")
The Edge of Dawn (From "Fire Emblem: Three Houses") [Vocal Version]
Molduga Battle (From "The Legend of Zelda: Breath of the Wild")
Wish My Life Away (From "Finding Paradise")
Crossing Field (From "Sword Art Online")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bdd264f3e81c15e3db15bdfada1ab963e92513b1e8394120aa06d77d5d4228. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW1955123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77749062c885e42b07e44e89d79d494aefc345018924a6a8e6f8894ef1266ac3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW1956654.
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 0xf57753298ced89b85a7817d9fb1e6047b3ceecc0b0d635eb03c0ec30322ecdb3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW1964779.
Town Veiled in White (From "Octopath Traveler")
Little Sweet Cafe (from "Trials of Mana")
Shop Closing (From "Animal Crossing: New Horizons") [Chamber Cover]
Ballad of the Windfish (From "The Legend of Zelda: Link's Awakening")
K.K. Sonata (From "Animal Crossing") [Piano Solo]
The Girl Who Stole the Stars (From "Chrono Cross")
Auresco, Royal Capital (From "Xenoblade Chronicles 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab3ab0c3b984bddecc3ed294024f5f77da67417094cade8e158abd9a26c2804. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2102676.
Servants of the Mountain (From "Final Fantasy X")
Spirit Crucible Elpys (From "Xenoblade Chronicles 2")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc100d553a15ccac1e66f69d4b576fcdd578a1b44ac752c57ea1eba1384702aff. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:19:07Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2150503.
Flowers Blooming in the Church (From "Final Fantasy VII")
Good Riddance (From "Hades") [Acoustic Version]
Beneath the Surface (From "Octopath Traveler") [Hybrid Cover]
Once We Were (From "Dragon Age: Inquisition") [Acoustic Cover]
Crimson Loftwing (From "The Legend of Zelda: Skyward Sword") [Hybrid Cover]
Sidon's Theme (From "The Legend of Zelda: Breath of the Wild") [Mashup Cover]
Crossing Worlds: Music From Chrono Cross
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4c4cd933eb989d3bb736a385f5a57edc2338ec831e7963045cf256129c3ef8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWX2245035.
Beyond Deduction's Logic (From "The Great Ace Attorney: Adventures") [String Ensemble Cover]
Listen to the Cries of the Planet (From "Final Fantasy VII") [Hybrid Cover]
Toss A Coin To Your Witcher (Vocal Cover)
The Edge of Dawn (From "Fire Emblem: Three Houses") [Acoustic Version]
The Turret at the End of Time (Original Soundtrack)
Steep Hill (From "Animal Crossing") [Acoustic Cover]
The Pit of Despair (Original Soundtrack)
Loneliness (From "Xenoblade Chronicles 2") [Violin and Piano Duet]
Loneliness (From "Xenoblade Chronicles 2") - Violin and Piano Duet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6ba4b8851c0ed7774e3b8c4dfa0bbb39085b8bc9560b647b9091cecd23def0. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32180756.
Lugia's Song (From "Pokémon: The Movie 2000") [Vocal Cover]
Elysium in the Dream (From "Xenoblade Chronicles 2") [Acoustic Cover]
The Winterlands (From "Octopath Traveler II") [Acoustic Cover]
Endless Sea, Boundless Sky: A Xenoblade Chronicles Tribute
Stab the Sword of Justice (From "Star Ocean The Second Story R") [Hybrid Cover]
Down By The River (From "Baldur's Gate 3")
Twilight Excursions: Solistia to Aionios
Alfeto Valley (From "Xenoblade Chronicles 3")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e9b233132a289c8bce7d4687427ed635e2ae3faeeddcf8ead063d4d69190f1a. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32376901.
Agnus Castle (From "Xenoblade Chronicles 3")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x083c3203a1a320b0dc355fe166850f4c622258e81c379eedb1416c044656b1e2. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32376902.
Tree at Dawn's Light (From "Visions of Mana")
Bard Dance (From "Baldur's Gate 3") [String Quartet Cover]
Zanza The Divine (From "Xenoblade Chronicles") [Hybrid Cover]
Grief and Sorrow (From "Naruto") [Violin and Piano Duet]
Desolation (From "Xenoblade Chronicles 2")
Enchanted Valley: Fantasy Slide Puzzle OST
Epitaph (From "Final Fantasy VI") [Feat. Matthew S. Harrison]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85654ec236cc67a393f61282d292556b5682ad9944c2d1c87fada23560298e6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592928.
Vector to the Heavens (From "Kingdom Hearts III: Re Mind")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84d839ba7863cfa42f99be45c19257d5d52b42e8cb9e978b05fec2079719a68. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2071311.
The Sunlit Earth (From "Shadow of the Colossus") - Violin & Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc48d592427c756727ab1f108f2ce87a051bf19c34aa958bc8ad8269bf193075. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32191661.
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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZPJ32230562.
A Place to Call Home (From "Final Fantasy IX") [Feat. TeraCMusic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724ad279b95dcdf20fd131f9d77957553e44397240d456c902f25b79e0c1b8d2. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592940.
One-Winged Angel (From "Final Fantasy VII") [Feat. TeraCMusic]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b1dd6182d5b4bffff00e9e99a1d9b56fdd3626304abf0077f00dc10106b327. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USE831592958.
L'Impeto Oscuro (From "Kingdom Hearts III: Re Mind")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd50b31eef6c10c851bab507725fafbd1d11bb5dbde7f07f68e769c8d54be255. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW2056264.