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 0x202ec08dcc7314cbc70c39f61d1d50901367aba2b8d436e7c04e50915e32d360. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e92dc57c-6d7e-4994-b2a2-6e297b58d34b.json and https://artists.proofprofile.net/proofs/artist/e92dc57c-6d7e-4994-b2a2-6e297b58d34b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
眠れるモーツァルト：赤ちゃんの睡眠補助音楽・脳発達クラシックＢＧＭ
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 0x96c9a99318c0364c739a43ce7e6e380531e41aa5388a8d7ee9972dba0bb1de26. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/ITO101630360.
赤ちゃん眠るクラシックピアノ音楽
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb3a90985c63540f5d08344a475f12525754b0c0136ae6abb45c0a3afc819c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:27:11Z), 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/ITO101630361.
レクイエムニ短調ディエス・イレ怒りの日
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8862e65d7f4c40e789945759c221b16bb724ddfdf76a05d46635e0914c100d2. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:38:20Z), 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/ITO101630362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1118b65c73dc5d8ff0a8d4497c7ddcedc59ba8fa6a3cc8d6e5942f9a1aad2119. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITO101630363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f09349e1b1265859babae567203b108bb2cbadfdb9d19aa28ee6c945080430. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:38:14Z), 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/ITO101630364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e10c679858ea4766df1f29513e7875863c10c62f33a3567fb754546d1404e2e. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/ITO101630365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf176388e4146bbfd755ff4acc801fd02873bebd907434ff33a66b77bc64d68d2. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ITO101630366.
ピアノソナタ ハ長調 Ｋ. ５４５（新モーツァルト全集第１６番）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025c8a9a27d3cfe7f5e8fe68913daa7cf6e076297f7092ced9e478719a8a823e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITO101630367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe92653ef48e9e0dc01fa5c20c8e47f84afa32564b5e5edbe2c2eecb021e87495. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ITO101630368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b8543cb3586bf1b7dffc0a95acd5ab606c8b32785a5a895e50f217e6d7e4fb. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:39:40Z), 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/ITO101630370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1821ffa1a27706ff44075ef74418be80a23a015c25ef2ce103cee89aaeb2050b. 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/ITO101630371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a497bbd21bea628f58d3073704107fa94f8cf52256b03f633a6b5a0f3abfb8c. 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/ITO101630374.
眠れるクラシック：赤ちゃんの脳発達促す・ぐっすり眠れる音楽・眠れるピアノ