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 0xd7576e4819cfa23a9589c679822a900e8482b0102a06e9768353042fff07e48e. 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/1aaf0c02-5adc-47ed-913e-30dc02002c54.json and https://artists.proofprofile.net/proofs/artist/1aaf0c02-5adc-47ed-913e-30dc02002c54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Somnus (From "Final Fantasy XV") [Cello and 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 0x467245469f4f16c53f65e7558db12a35d99a1cddaf6918946f6e09471b735774. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B1975255.
A Beautiful Song (From "NieR: Automata")
Women of the Crystal: Themes from Final Fantasy for Cello and Piano
Terra's Theme (From "Final Fantasy VI") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28c7363ef3166003a67f4c89b1d96eacc5cada91fe23a97470cf3bad921a4f4. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2031083.
My Mind/Eyes on Me (Rinoa's Theme from "Final Fantasy VIII") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ade54731b0b186abf211af4cb671583a3eb5cb0f20a41227ee5309c32ce993. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZ22B2031084.
Freya's Theme (From "Final Fantasy IX") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbf907ae70a5c7b369562fd1737d74977c1f7ee58da2fee2184d93bef1d61eb. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZ22B2031085.
Lenna's Theme (From "Final Fantasy V") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891e17ff500c0f28733564791a3a66968907fd6ba487fc0028047a7a3b28d21e. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2031086.
Theme of Love (Rosa's Theme from "Final Fantasy IV") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56180c0d4049bd407c9f8af2dd6e512c0f4d72e84fbd0f47992aefa0284882d7. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2031087.
Lunafreya's Theme (From "Final Fantasy XV") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa54aab5ff1aa84e0e17a312b423091cca46c151506fa0001e7eb7f67d5895e8. 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/QZ22B2031090.
Song of Memory (Garnet's Song from "Final Fantasy IX") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95bb15d72d83ff5b2608c4a29a7e0007d8dd1cf507674ce09d03a8021de5896. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2031091.
Rydia's Theme (From "Final Fantasy IV") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfeb50dd183ef1e92a2d11398b032d4472840c06bb5f6c49849739ab51d90e1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2031093.
Aerith's Theme (From "Final Fantasy VII") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf42aa8987f133b1ec84ddebd539e0a44fe05f7f3e94c2d28f5de45fbf5e431e. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZ22B2031094.
Lightning's Theme/Blinded By Light (From "Final Fantasy XIII") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6b554dc81e1c8bf772d7d6cae0b68979eead875d0b93e41ffb340ab8ca4cbc. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ22B2031095.
Yuna's Theme/Suteki Da Ne (From "Final Fantasy X") - Cello and Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd173fe1dbb0e4e51bfb028affce12f59c273ccb051188b2da2bfc7b8b03244c2. 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/QZ22B2031096.
The Fire Within (from "Final Fantasy XV: Episode Prompto")
Fire Emblem: Three Houses Main Theme (From "Fire Emblem: Three Houses")
A Place in the Sun (From "Xenoblade Chronicles 2")
One Light Source (From "Another Eden") [Cello]
The Edge of Dawn (From "Fire Emblem: Three Houses") [Cello and Piano]
Elysium in the Dream (From "Xenoblade Chronicles 2") [Cello and Piano]
Ravus' Theme (from "Final Fantasy XV: Episode Ignis") [Cello and Piano]
Town Veiled in White (From "Octopath Traveler") [Cello and Piano]
My Quiet Forest Home (From "Octopath Traveler") [Cello and Piano]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58f9ecc0423ad83f3a0ca7ad4de52243c58644712357f4eabe9b3d81fb1b8cf7. 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/QZ22B2057756.
Fear of the Heavens (From "Secret of Mana")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8de39352aecb6a1f8ff70019de007c35111b4f73f6c25f04fcf5432f87c69fe. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZGWW1977881.
Aerith and Marlene - A Familiar Flower (from "Final Fantasy VII Remake")
The Turks' Theme - Office (from "Final Fantasy VII Remake")
Sacrifice Part Three (from "Trials of Mana")
Authenticity - Pertisia's Piano Solo (from "Ikenfell")
Twilight Serenity (From "Genshin Impact")
Rose Thorns - Battle with Aeldra / I Still Regret (From "Ikenfell") [Cello and Piano Cover]
The Frostlands (from "Octopath Traveler") [Chamber Cover]
Somewhere to Belong (From "Fire Emblem: Three Houses") [Cello and Piano]
The Harborlands (Night) (from "Octopath Traveler 2") [Cello and Piano cover]
Dear Travelers (from "Octopath Traveler 2") [Cello and Piano cover]
Ruins Immemorial (from "Octopath Traveler 2") [Cello and Piano cover]
The Prelude (from "Final Fantasy VII") [Cello and Piano cover]
Ochette, the Hunter (from "Octopath Traveler II") [Cello and Piano cover]
Opening - Bombing Mission (from "Final Fantasy VII Remake")
The Book of Lies and the Universe (From "SINoALICE")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb39b5dab9b693308bcda1ccd9bb7e4e047fce4cbdc2703933c41232c6cc09966. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QZGWW2141560.