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 0xa9079c3fa4f2a5e70f677742f08bb797c16ee95358fafdfe24ae57c4f521a669. 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/d05a09fb-0ab5-4db0-b0e0-23fe4492611b.json and https://artists.proofprofile.net/proofs/artist/d05a09fb-0ab5-4db0-b0e0-23fe4492611b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ディズニー ピースフル・ピアノ・メロディー
ディズニー デライトフル・ピアノ・メロディー
決定盤!!羽田健太郎 / クラシック名曲集 ベスト
To Love Again～羽田健太郎Memorial Piano Works～
ザ・プレミアムベスト 羽田健太郎~癒しの世界~
ウォルト・ディズニー・レコード・セレクション:ピアノ・ソングス
～アンコール～星に願いを When You Wish Upon a Star - Live 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 0xb221cd84e4ede91f90bbb9ca04d14a9df7553d1356e0783d3db7de6513dc2428. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:30:37Z), 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/JPPC01701054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a4fbb60eba287c8d645f46d98c2f3f8587d2fc1ab7da6fd0ad8e11ffdbc25e. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR2X41824915.
羽田健太郎: 交響曲 宇宙戦艦ヤマト
交響曲 宇宙戦艦ヤマト 第一楽章 誕生
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e141020781d9042597491add826d07b87a5e1b5039cbce71bf2c9930e15981. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPCO01908830.
羽田健太郎：交響曲 宇宙戦艦ヤマト -LIVE 2023-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ce543d6f25092573f2ff3ed98f647066213194d466f2bc09f7309a45256b83. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/JPPO01061850.
Japan Air Self-Defense Force Central Band
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7177fbddefe0b202daf2a22baa125ae48303b1e0b38b26c03aebd8207136cfe3. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPZ921502697.