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 0x88a028d3567e5907454de0865c69e328dc3a992f962c74db6f961a48dd01ffca. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0eccef3-5615-44e7-ac80-10c426222cfd.json and https://artists.proofprofile.net/proofs/artist/b0eccef3-5615-44e7-ac80-10c426222cfd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
深見東州ピアノコレクション3 マンハッタン・ラプソディ
Toshu Fukami Piano Collection 3: Manhattan Rhapsody
深見東州ピアノコレクション１ ミュージカルを見にいこう
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 0xeab799f30a0c6b5832c1612547433205578ae6517d78057ff34490a37d805455. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:55Z), 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/USI4R0402569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530326333ecefdd5ad230ae77cde7041e9dfa2266345880a5961dac48735146c. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/USI4R0402570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2457cc6094c78f560d1b2ee949cb26a265f4d38bea546699cbe79af08e6f364. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USI4R0402573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4925db31d1303b474811b698c7e694eead0446fb183f63144ff11edeff88e61. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:36Z), 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/USI4R0402575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9e56828efa9c3793af81a7973b325f5c75bf23dfc7fbc8bdab8611fee96a7b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USI4R0402577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234edd61d1f45d630c1d97ac0a9961e7f9402dc94ba1ac83aad97baf0e6f61f8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:54:42Z), 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/USI4R0402904.
キャンドル・ナイト・ピアノ ～音楽の灯る夜に～