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 0x8afd151ce397707bff578d23d433b03e26aac119f4e090d77fc3a7522eba7992. 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/2b1353d1-8fdd-4e61-b977-1d7aab3d1330.json and https://artists.proofprofile.net/proofs/artist/2b1353d1-8fdd-4e61-b977-1d7aab3d1330.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
SAYONARA COLOR (feat. KIYOSHIRO IMAWANO)
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 0xc881402cd4044189d76c9967bf81bde43d58567cba5de20a7791bce3f2c5cc35. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPTO00501326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c48d2c66a1a641f6929359c51fa3d7a7a4bd91186049ccfbfc3460ee29c5483. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPD000203620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c48d2c66a1a641f6929359c51fa3d7a7a4bd91186049ccfbfc3460ee29c5483. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPD000203620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c48d2c66a1a641f6929359c51fa3d7a7a4bd91186049ccfbfc3460ee29c5483. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPD000203620.
TOKYO SKA TREASURES〜ベスト・オブ・東京スカパラダイスオーケストラ〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e4c44299ac687bf574263bed28ddbd4a90aa9e4e175538186004abd3c061a3. 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/JPB602000630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c2ad24a9f0c55f61bcf9d4429acc9c6847ca1475a3dc0d7de927a2786c07a3. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPTO00303042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60136d18972bc0ffcf4aaf2d3dcdf3186c468a3a6b3ab0ecfd382deb3b2b0f4c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPTO00303043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc301a6eb152010e577ca2e13a307710e724fa7005590b6ff0dea019969bf4e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPVI01035590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab48b826fc519dfc549bb4ad4f5bf46e7b45aae116b639ddda330b7c329488d0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS801404663.