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 0x1ea9e2c3f8c76575c17c08e247ea7046e2cb344e19b1f8c7fd4f93071d0a7785. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/facf0209-af0b-4591-92e9-2c159450deb9.json and https://artists.proofprofile.net/proofs/artist/facf0209-af0b-4591-92e9-2c159450deb9.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 0xbb9aee42b3eb6bb2bb6a2c0e1c9ed2559cb9732404e9490ecedbe720a0701413. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/JPPC07901220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed35aded492dd9406afdc4c51735167c4c62ebdae98d29129ace8d42a53809c4. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPV200600169.
愛をとりもどせ!! (MOVIE ver. Instrumental featuring Yoshio Nomura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa696025ffbbfd86773446a4124937f0d4565352ca14b9da77fc66cd4246351f6. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/JPV200600173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da7dba0a5d89c84b8bfd0df3603c4e5cc7520fff4971b48bf015f0975d9834. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPPC07901210.
パチスロ 北斗の拳ＳＥ バーチャルプレイミックス
ポプコン スーパー・セレクション クリスタルキング ベスト
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9da7dba0a5d89c84b8bfd0df3603c4e5cc7520fff4971b48bf015f0975d9834. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPPC07901210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c40a604ab1c71e56db4bc2cce0a5fc96757417af5add075be56c0838ae2e0f. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:20:57Z), 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/JPPC08202860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14769fe65649f0fb28672ad7707b03a9469aacb145e935bf1a9f464aa1e3f7a4. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPPO01701379.