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 0xfefe64db13f2390450558e4ab38448dacda0bb1321b8bac937c54e6cbae3433a. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e7761a7-cb4d-495a-9d51-a2a4bfdfbb1b.json and https://artists.proofprofile.net/proofs/artist/8e7761a7-cb4d-495a-9d51-a2a4bfdfbb1b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ONE MIC (feat. KZ, teppei, Kyons, KBD, SKRYU, Draw4 & DJ SPI-K)
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 0xd6cdc4eb2d50912e76f87f64859425ab63396d93ac532911d29b1ad1648c9333. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCJPR2240043.
HAPPY END (feat. Draw4, KBD, Kyons, teppei, SKRYU & KZ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623b3421631ea9e7d031ee3f31d1b06a8a907bdda6fde93ab87978b00a7bc272. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCJPS2241368.
Run and Gun (feat. KBD, KZ, Draw4, Kyons & teppei)
SYOPPANA (feat. Miracle, teppei, KZ, Kyons, Draw4 & KBD)
by my side (feat. Miracle, teppei, KZ & Kyons)
DOJO (feat. teppei, KennyDoes, Donatello, Kyons & KBD)
やってもうた (feat. teppei, Kyons, Draw4, KBD & KZ)