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 0x5947bc6307690e9bc8f5a5c547666da9c75bcc68f04f9afb45f2dc0ea694ad7b. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf7f259f-4ed4-4b94-bbda-2bc0345ce62c.json and https://artists.proofprofile.net/proofs/artist/cf7f259f-4ed4-4b94-bbda-2bc0345ce62c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ニュー・サウンズ・イン・ブラス ハピネス・ベスト～ディズニー・セレクション～
ニュー・サウンズ・イン・ブラス2024
歌劇「ローエングリン」より「エルザの大聖堂への行列」 (L. カイエ編)
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 0xce744234bab28af740189eadce822471c047aeefa3248954d493e688f5dd5a83. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPH291670102.
歌劇「タンホイザー」より「入場の行進曲（祝祭行進曲）」 (J. ハルトマン編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5cad7a786925772239c352d4ef8a96e6879004b60599d0b65d6183dd9bc50b1. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPH291670104.
楽劇「ジークフリート」より「森のささやき」 (大橋晃一 編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c03ffb5f902b2c8a8c998ead933b1f74c230f45f1bee13719b055dd41c3906e. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPH291670105.
楽劇「神々のたそがれ」より「葬送行進曲」 (D. ゴッドフライ編)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a78cfbc657207609f920bd4e03b1e3c52ef8838731682814e150f76a987e0f. 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/JPH291670106.