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 0x7b322805205bef9561b16bba0139c9842108c8d057726bd4ff24167242577d43. Chain 2 (Bitcoin): anchored in block 954569 (2026-06-20T14:36:29Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b0d52b00-4fb9-4184-aaf9-df63d3bfa396.json and https://artists.proofprofile.net/proofs/artist/b0d52b00-4fb9-4184-aaf9-df63d3bfa396.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
ムゲンのキセキ/レアドロ☆KOI☆恋！ (ポポナ ver.)
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 0xae3f4e84276cae1e57c784df842c0171c367f69835c05f8ac3ecb523c9b00e15. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:12:00Z), 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/JPR502207114.
Mugen no Kiseki/Rare Drop KOI KOI! (Popona ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3f4e84276cae1e57c784df842c0171c367f69835c05f8ac3ecb523c9b00e15. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:03:43Z), 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/JPR502207114.
SEGA no Pi Po Pa -Heisya koushiki VTuber ga tsukuttemita-
SEGA no Pi Po Pa -Heisya koushiki VTuber ga tsukuttemita- - off vocal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6a1d29773edc404f9734d0e49e530c74b9dfecd4076c5b668c2f2617bded6a. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPX302578061.
セガのピポパ〜弊社公式VTuberが創ってみた〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea38601a16748fab9214946f06a60dfd83b3b67eac0ccb57c3823e1294b673. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/JPX302578060.