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 0xb00acde5806c058ab4a017383231ca39827bc92282b5039b4cd23b235e8370e8. 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/6b8f7e5d-c6cf-49e6-b918-baee612b7414.json and https://artists.proofprofile.net/proofs/artist/6b8f7e5d-c6cf-49e6-b918-baee612b7414.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
「ひろがるスカイ！プリキュア」主題歌シングル(TVサイズ)
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 0xe9e32d8d47d58c2aedddf279a1c381bf3549cccc45a8edc451100fb1a20da61e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPD602300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06e588fd3702bff985c2436e7c804e8952800afd73a637ab1d9b5c9dee45d3. 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/JPD602300104.
ひろがるスカイ！プリキュア 主題歌シングル【通常盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3219e038721eb29577461460303349b9432e83f78c351c5ef9363ed21367428. 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/JPD602300097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc032386c5aca0a463a09ac8064e4af2372b942763ec424ee254b293044b550e. 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/JPD602300098.
ひろがるスカイ！プリキュア ～Hero Girls～(オリジナル・カラオケ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f90fe93f4732e516a0d752521532b259fbf72a72497c1a9f9ea7fd22fbf4f8d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPD602300101.
ヒロガリズム(オリジナル・カラオケ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f008b28db5593d500b82d9d09ecbceaa778f750faae1906ba3196007986e320. 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/JPD602300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e32d8d47d58c2aedddf279a1c381bf3549cccc45a8edc451100fb1a20da61e. 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/JPD602300103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e06e588fd3702bff985c2436e7c804e8952800afd73a637ab1d9b5c9dee45d3. 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/JPD602300104.
「わんだふるぷりきゅあ！」後期エンディング主題歌 こむぎ＆いろはVer.(TVサイズ)
「わんだふるぷりきゅあ！」後期エンディング主題歌 ユキ＆まゆVer.(TVサイズ)
わんだふるぷりきゅあ！ 主題歌シングル【通常盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09512535f4fb8515efa9c374f824484be25121bdc9c3924fda8c7ddff4b3bd39. 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/JPD602400026.
FUN☆FUN☆わんだふるDAYS！(オリジナル・カラオケ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc7f5d4d9eeb122afee3d3e1f3be0da658a589a118af9077e4a12a804ee3084. 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/JPD602400030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25084c06c8d2122ad05a9c6e06af6fcd421e48aaa697b4e0ab55108479c6dd7c. 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/JPD602400002.
しあわせえぼりゅ～しょん♡ ～こむぎ＆いろはVer.～
わんだふるぷりきゅあ！ 後期主題歌シングル【通常盤】
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb57c1142db82133c25f9818fac7eb3985361ccb608dc31ed187244493a152926. 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/JPD602400334.
しあわせえぼりゅ～しょん♡ ～ユキ＆まゆVer.～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39df2475144b75ccee265a0f0db20b92a841d0d3a4143256719e28ac0a02a058. 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/JPD602400335.
しあわせえぼりゅ～しょん♡(オリジナル・カラオケ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b386a235f321899819d394e4e04184a9d040389acb31464ac6475853e54bbc9. 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/JPD602400338.
しあわせえぼりゅ～しょん♡ ～こむぎ＆いろはVer.～(TVサイズ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf675d0f574e703b08b9811ddee4ecdbdfa3fe78d98a54fcde3f5c07192c2c0. 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/JPD602400307.
しあわせえぼりゅ～しょん♡ ～ユキ＆まゆVer.～(TVサイズ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34483cb0f65a7288c765e3eaa28213611fcc204e3df254814245b24804d6d76b. 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/JPD602400308.
『わんだふるぷりきゅあ！』ボーカルアルバム ～We are わんだふる！！！！～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9c952f837ad329239044ce2de6e73afa6d9666c9f02866a65a338271771ffe6. 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/JPD602400277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6152f60609a30d707cc2f4009b2809d7a42aa7d731b5eb486b683a23069e1eda. 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/JPD602400280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x205d0504f93f634947eadc2edc3c600828012a274b8999dd5d3ab51ac12ad280. 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/JPD602400281.