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 0x1b693e4d30614eeed8e9697c871be036b20ab096b2388bdad88e68c591c0c002. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/286327f4-8723-41a6-b394-43a495ea9d30.json and https://artists.proofprofile.net/proofs/artist/286327f4-8723-41a6-b394-43a495ea9d30.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
懐かしのテレビ主題歌！ 想い出のアニメコレクション VOL.1
懐かしのテレビ主題歌！ 想い出のアニメコレクション VOL.２
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 0xc9b26d3ba293636b20b97804bf5c4f9e6c8c9caa90593366a0605c16696f9037. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/TCJPO2150510.
懐かしのテレビ主題歌！ 戦え！ヒーロー＆スーパーロボット
昭和のテレビ 懐かしのキッズソングコレクション VOL.4
昭和のテレビ 懐かしのキッズソングコレクション VOL.1
昭和のテレビ 懐かしのキッズソングコレクション VOL.2
昭和のテレビ 懐かしのキッズソングコレクション VOL.7
昭和のテレビ 懐かしのキッズソングコレクション VOL.5
昭和のテレビ 懐かしのキッズソングコレクション VOL.8
昭和のテレビ 懐かしのキッズソングコレクション VOL.6
昭和のテレビ 懐かしのキッズソングコレクション VOL.3