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 0x50d1237bc5565026e1169417fee13aff2d23afe7438aea761821f2043432e9c4. Chain 2 (Bitcoin): anchored in block 953808 (2026-06-15T16:45:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/edbd177c-9b55-436e-a060-1c338ae4f1a3.json and https://artists.proofprofile.net/proofs/artist/edbd177c-9b55-436e-a060-1c338ae4f1a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
プラネット・クレイドル／ワンダーリング
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 0x12a6759e759fd1ef4f2ea4af539d86092e78832c9dcec989819e44f09b22c1ec. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/JPG751200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c25c1de55f9024af87010eb4e2ff922cf9936085fb231a3b6368e3af7a5886f. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPG751200355.
希望の花とつるぺたとESP研のテーマ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999612ad92d200951f79f993b84fc355cfd8797d9f08bb4a53b6b73857aa1bf5. 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/JPG751300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa3187e3c30db7f993caf45b9614c276e6b3d41b4ff90cba50d1f8ad63756b. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVI01412350.
ジュ・ジュテーム・コミュニケーション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21ae7c133370f12ec9fff05b0b3e458b0350744215c04a7f29232cc091a46af3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI01605770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a81bea50b27674519cd24112819f4c5df7fa5f43d0c854b824e43ece678e35. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI01605780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6759e759fd1ef4f2ea4af539d86092e78832c9dcec989819e44f09b22c1ec. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/JPG751200354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x999612ad92d200951f79f993b84fc355cfd8797d9f08bb4a53b6b73857aa1bf5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPG751300018.
「たまゆら」主題歌コレクション～卒業写真～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6bc7a54cc3465c6544b318abb32c3308f368e94ea0252515c0b34c6840aedb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG751300390.
「たまゆら～もあぐれっしぶ～」ボーカルアルバム うたとせ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6bc7a54cc3465c6544b318abb32c3308f368e94ea0252515c0b34c6840aedb. 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/JPG751300390.