Aki or AKI may refer to: Places Aki District, Hiroshima, a district in Hiroshima Prefecture Aki, Kōchi, a city in Kochi Prefecture Aki District, Kōchi, a district in Kochi Prefecture Aki, Ōita, a tow
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 0xf750249fdd5b326fdcba9909378df7ebecdfc74852ff70fae3802868bb58861b. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/39394f42-900b-4114-81be-5a4d109bc81b.json and https://artists.proofprofile.net/proofs/artist/39394f42-900b-4114-81be-5a4d109bc81b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Magic Love (Vocal Extended 2015 Remastered)
家族で歌えるファミリー・ソングが大集合! はっぴー・ふぁみそん 50音順(こ～は)
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 0x52ed055a71e00b8deb99b53817e9106db5fee5c645f9fef4548ba498240769bc. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPKI00605219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8833f7c030ba08ff12130347ea04d7c44da5a14bb552b3bafc10b51734d57ff9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPKI00910846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x179400c5f9038bd4600c943672358fe31e2fec9788e982163acf0ee42738aa7e. 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/QM8DG1913461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e8d288b566521940362970bbd77ea85b2d719f2e798d93a23ac7f4e84216fd1. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZHPJ1910736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x938bed983d9132c9b10d93549f36ee253b601ed9fd48937dedd63535b5f5bd3b. 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/QZHZD1939920.
保育まるごと夏ミュージック～海/太陽/海/食べ物/キャンプ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90104300895f0be4e289b1ae2cb3bbc58200d61be5e35b24fc1f0d1c3b2f6113. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPKI01010594.
家族で歌えるファミリー・ソングが大集合! はっぴー・ふぁみそん 50音順(は～わ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7bdb667e69c86c091ea87ba1b78553de60857d1b31bfd98802f162824e0784. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPKI00815129.
ふりむかないで 〜Don't Look Back〜 - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4523519df514d07778657749a5d0b4ca266c9b418a20f324c0e1d907124c3dc4. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPB609670903.
家族で歌えるファミリー・ソングが大集合! はっぴー・ふぁみそん 50音順(あ～こ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687b32e6883adda30347ad9f7aa83674763d95274fa31fe8023511f75623e3ba. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPKI00605225.
あいをぎゅぎゅーっと!こどもがうたう身近な歌あつめました。～すこやかな成長に寄り添う50曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f624bfbae4f9d6f4d7590c6aa2874876f1f7f3bae17f1a264458863ce22430d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPKI00602626.
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