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 0x14e4b159468bfe327babb5dfed9312454b316929f4386f0a49df10456b9c3a6c. 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/1a161046-4a7a-4e14-9934-b5c871ad83f9.json and https://artists.proofprofile.net/proofs/artist/1a161046-4a7a-4e14-9934-b5c871ad83f9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
あの夏へ(「千と千尋の神隠し」より)(ピアノ)
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 0xb6173b07371b2c79685ea28c7f1cb737394a97a63907687d847925f15bc9edb7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB952003166.
カントリーロード(「耳をすませば」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b7eb811e75d31279d31ef376ecb7d83faa190ccc6be17cee6a086b10bd3765a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPB952003167.
さよならの夏(「コクリコ坂から」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd5db80c1875b199527b6d31cd34a29e51386c537229a2023ed0e1e911cc25fa. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB952003168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44743cd2df9a77234313d676fc4d4bfd1bd5e14f1695a1d7c6cb9769d22ec36. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB952003169.
ねこバス(「となりのトトロ」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89bfc32b7a0eac27175c3a6cdd1e9aad08645e09f73eb8df1561d00604b113ce. 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/JPB952003170.
失われた楽園(「天空の城ラピュタ」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcee74a26ff9ac682aa4ea1a80473ac56f45aa26c86a256c2c52331cf9f1c0d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB952003171.
晴れた日に(「魔女の宅急便」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc29a11613145732e7310ee636806ab533f61567a8ae726da99d54ebabef9ad4. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB952003172.
癒しのピアノ「人生のメリーゴーランド」(「ハウルの動く城」より)
人生のメリーゴーランド(「ハウルの動く城」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ca80bcbffddb5e32b8280ffa8030383d9f0ffa11aa04508964ea1d155a5b37. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB951901017.
癒しのピアノ「風の谷のナウシカ」OPテーマ(「風の谷のナウシカ」より)
「風の谷のナウシカ」OPテーマ(「風の谷のナウシカ」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e126a682554279d9739d3868fc440a36ef63900549489c8496635d415e6023. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPB951900954.
癒しのピアノ「やさしさに包まれたなら」(「魔女の宅急便」より)
やさしさに包まれたなら(「魔女の宅急便」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e867c86bf31164d3c07000563fdaadcbb79ef1b63924d8d621c5bd32ac7f75. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900912.
癒しのピアノ「ひこうき雲」(「風立ちぬ」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb271ed442bcdd507975cae90d4532d599683e38e7262d10b00894eb54a8f8c3. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900858.
癒しのピアノ「いつでも誰かが」(「平成狸合戦ぽんぽこ」より)
いつでも誰かが(「平成狸合戦ぽんぽこ」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74e79ae7e6f366081ba7467fd0e82b7e527a59cf8fe26441701b295aacbb3c9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB951900855.
癒しのピアノ「アシタカせっ記」(「もののけ姫」より)
アシタカせっ記(「もののけ姫」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec74bec6dbbe07b98e2dec665955802a3e3c19317db263a18944b7108b579db. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900615.
癒しのピアノ「もののけ姫」(「もののけ姫」より)
もののけ姫(「もののけ姫」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedaca51e39ef16abefe6a0c6bef39307620fa7225d23b1ad36c770ec7cf8f75a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900588.
癒しのピアノ「いつも何度でも」(「千と千尋の神隠し」より)
いつも何度でも(「千と千尋の神隠し」より)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabd3c9b728026388bc109a40e8f0c752d26dbea62b216ad55d726e11d0681f1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900553.
癒しのピアノ「君をのせて」(「天空の城ラピュタ」より)
君をのせて」(「天空の城ラピュタ」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea9adbabb216b75d282d7ecf98d921f5d258c03ef6b99e11314d4471fd2b2fac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900395.
癒しのピアノ「風の通り道」(「となりのトトロ」より)
風の通り道(「となりのトトロ」より)(ピアノ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca69c291a47632a7f25d9aca7f31cda480bc2ab9a8ba24f3e5df7bde54484da. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951900372.
ハンドベル・サウンド〜ジブリ・ミュージック〜
海の見える街(魔女の宅急便より) - ピアノ ショートver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a874c39b8c58f7a9bcc9db5f895a5d47a2bb37751519581ef0cf990060694c8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPB951210850.
人生のメリーゴーランド(ハウルの動く城より) - ピアノ ショートver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5884c13bfa3c0dffefb85d23b88f29778650572c11520c62cb3771fed619e944. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951210851.
Arrietty's Song(借りぐらしのアリエッティより) - ピアノ ショートver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6514ab9059867b7e88d282aa754c86f4ed52830940025967dee911573f493512. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB951210852.
海の見える街(魔女の宅急便より) - ピアノ 3BEATショートver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaac0124db3149f27990bedad75a059baa013b0bc591777352e37a1a2dbc4ce. 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/JPB951210853.