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 0xa944d95bc1646b448b54652e43b7582b3c6e906b10d5e80554fb4cffb3d24802. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4e048433-a2b2-4626-8b8f-3b1eefe634d9.json and https://artists.proofprofile.net/proofs/artist/4e048433-a2b2-4626-8b8f-3b1eefe634d9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
妄想アスパルテーム (MidNight ver. [feat. picco,初音ミク])
妄想アスパルテーム - MidNight ver. [feat. picco,初音ミク]
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 0x93e88644d8879fb21b71c8ea5e8b72019aea82a5c37263b65a8ca9fc2fe92c7f. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/JPB602302469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce56e2e7af8e04a5984d1712662be89a1c4c675808b05ee6fd145d8dfe33932c. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:21:55Z), 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/JPB602302402.
ちゅきちゅ♡きすみー (feat. タケノコ少年,初音ミク)
ちゅきちゅ♡きすみー - feat. タケノコ少年,初音ミク
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e7619084cdc64c931b4a8cb3eed95ebf175851d75a36ebd77f78829f210af. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:10Z), 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/JPB602303694.
コンビニ☆ダンス☆ストア (feat. そりっどびーつ,足立レイ)
コンビニ☆ダンス☆ストア - feat. そりっどびーつ,足立レイ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98330cc516801df66ec157fc8ef2a6cc19707b5afd278a22d95a6645982cb56. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/JPB602400147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c6d105ddd5b5753f1903d9eb6c2a50250e956cad9d8f4e50f94f08411c13db. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPB602401294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ffad92a49a6fbefb66f2aacc20b3620fe5bcd5137addc5bd1ef62b8f39eaca. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:26:57Z), 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/JPB602502286.