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 0x46f68be31ba61e9a664910cc7be3420e2f6826a2e7252ae9e07e7b51eae64ba8. Chain 2 (Bitcoin): anchored in block 953733 (2026-06-15T03:12:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9788729b-6f65-42d9-ac8a-6475fffb0a0c.json and https://artists.proofprofile.net/proofs/artist/9788729b-6f65-42d9-ac8a-6475fffb0a0c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x9934816a47408d71f7362451e0f43ee204cb0a560b3126a08a88264dadefd9dd. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFYY2146375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e11fccfd23760402d7f7432aa52ad582ed1ede69ad9c5116ba8f15ede4a6b80. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:36Z), 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/QZFZ42203751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8388de088973d60ffba01fcafad63da4bd41a106b0b32aceca77ff7d04e051a4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZK6G2431110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x134b38fd5db7a452da36949b81bf52ebd8d24aad447ca4485faba77a5320720e. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:09:05Z), 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/QZWFQ2489484.
Tokyo Alien Ship (feat. TKda 黒ぶち & DJ SARA)
Tokyo Alien Ship (feat. TKda Kurobuchi & DJ SARA)
Call My Name (feat. TKda Kurobuchi & DJ SARA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18f0dcbbe73bceb11e3692028a1719d281fca997284fc81e65765d55b861715. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZAKB2455528.