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 0xe2cc8b0ad70b652dfdd7b8ba1f19cdd9cd4f64b3f70305f68be7fc31b3767fd7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2550c10-ec24-4fd8-9ebb-72fa677da479.json and https://artists.proofprofile.net/proofs/artist/e2550c10-ec24-4fd8-9ebb-72fa677da479.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Blue Stone of Atlas (Piano Solo Version)
Reboot in Shinjuku (Tokyo Lo-Fi HipHop Mix)
Going Home at 5 A.M. (Tokyo Lo-Fi HipHop Mix)
Zanarkand (FINAL FANTASY X Piano Collections 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94557c40cb1d280f5e13b016ca25b93f47f14c96120978d551fd010576ace534. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GBWUL1946741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f30694ac0b416b0db0992a44d69cc0625d3b1c569301546bca7e761d195a118. 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/GBWUL1946828.
Etude No. 1, Op. 8 "Snow Mountain in Edo"
Prelude No. 2, Op. 7 "Saxophone Quartet"
Prelude No. 2 in B-Flat Minor, Saxophone Quartet
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a58f2cc63b1f9f7b2c979e82ce5241b0398550b2825c68dd623305f10edacf. 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/QZ5FN2135691.
Intermezzo No. 1 in D Major, Late Sunday Morning
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb289718fc2d37b2d9f8cdf562614231886bfa88b4e0334b05817d0f38d75ab1. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZ5FN2135764.
Etude No. 1 in E-Flat Major, Snow Mountain in Edo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bf8c48bd8059ec0bf823c44de52506d7b42f8fc52038267baceb94b69d20ed. 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/QZ5FN2135772.
Fantasie No. 2, "Time Warp" (Tokyo Lo-Fi Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bf8417915fe50739f9cf3398eb72b721d61a4e033517ce909e4579c1f65ba4. Chain 2 (Bitcoin): anchored in block 957848 (2026-07-13T10:31:25Z), 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/GBWUL2105039.
Impromptu No. 2, On the Cliff (Upright Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14083d6163c7279e6eda78deb7277b5dfc6b0f95cf0907f867116c90fa1cc56c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USLZJ2410067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad0ad48c5b98127d126062e5a93b7e015fb1d4adf50f1abc71d54f8597db6ab. 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/USLZJ2410070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x819dfac9477dfb8d82802482899e94a9a57ee892608e72ba83fc353135d49d06. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USLZJ2410083.
Impromptu No. 2, On the Cliff - in G-Flat Major
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf06ee027f205cf1b3954af97f3ff41fde50efbb22f24367c767efa5668e03f. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:35Z), 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/USLZJ2410086.
Portrait No. 3, Retired Hero with the Shield