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 0x480cda5c214f63f330f419976d74d13ca7fc3ad744b728cfbcb0779e0b9fc101. 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/9edd8c96-57a1-4e05-b093-b4c9e1972744.json and https://artists.proofprofile.net/proofs/artist/9edd8c96-57a1-4e05-b093-b4c9e1972744.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Secunda (From "The Elder Scrolls V: Skyrim") - Piano Version
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 0xfe6a781bbe61d87334157d411c5d4ace314dcb49585cd4f553ee78bbba08011b. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUGBT2481100.
Auriel`s Ascension (From "The Elder Scrolls IV: Oblivion") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb061b461768530e6517b0d883dd7161aae317b1e7db06361787afc1e3b315c3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2481102.
The Promise (From "FinalFantasy XIII") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2643bd3043a28587528e999fe2a84ed627ebd3a3cc9cb15bd8b780247db230. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2545275.
Roses Of May (From "Final Fantasy IX") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8343c3d2b4e5b502a455cbd0bac9db1a82c4f46a134b8a184b8d8232e122c5f7. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2545277.
On Our Way (From "Final Fantasy VII") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2edc5dff25066ffac365fe473867009a8ca725ebaa031885839f952e663546b. 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/AUGBT2545278.
Fisherman`s Horizon (From "Final Fantasy VIII") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe473006b2f639da473d54ed5570df3e89116fb1fe935eca126a9cac53bb7fd69. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2545279.
The Place I´ll Return Someday (From "Final Fantasy IX") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132f5e5355a4a1caeeb33b3ed793a529db56cadce3ce278741bf294853029ae1. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/AUGBT2545283.
Balamb Garden (From "Final Fantasy VIII") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1cd9c84f077a5cc3f7a30800586f40d9e8941c2fb62feb0a226ec73f5520c7a. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUGBT2545284.
Kuja`s Theme (From "Final Fantasy IX") - Piano Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40280cc63c2250cbd6326024f4db0ddcec7242f87df783d7e06d4b7ca2d75096. 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/AUGBT2545286.
Only Yesterday (Main Theme) (From "Only Yesterday") [Piano Version]