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 0x37e0e27e399ca6202e9ea8a03039a397133960bed4d9d14301f773af5b7a4f64. 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/b1759169-87d3-4cbe-897e-4d0b9255fe03.json and https://artists.proofprofile.net/proofs/artist/b1759169-87d3-4cbe-897e-4d0b9255fe03.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 0x254a08d8c78e4a052ab2a1ed46eca0ae886daf0f9184240f6bf8b76571c2a6cd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPTF02108702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ec8e5448f5b40a73da23db888694257041d799b4cb27e3ea8d3c6bf4b4c086. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPTF02108705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b6b8314876c35aec9543e131cea190fc3edf842437dbe66e85f78781ab8d05. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPTF02108706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeebe95626a27a867cad916a68914f9b3f2d9c7adbc4a50c7aad56fed85155d7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:11:36Z), 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/JPTF02108601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x794918a1ab2294fee121d877e3bfd88fdc920e86e9c6a9576189d79713dbf57a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPTF02108602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf0ae3b559388a09ac7725fd0a08eaeab20c36ef052b47af1e591de2c0f791f7. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPTF02119101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28685305c04dd20a8afc9ead2bbad222d9416c35c3c1a892b07e862996f0d229. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPTF02220501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e24c2b750bf818bf1757a10c11d3a23458c70166492f348f9ccde7157ca7b3. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:39:56Z), 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/JPTF02312801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2e559833adb8b1fc84e3658e71c461b4bff1a9b3b82952ee7e91f66193acc6. 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/JPTF02312802.
テーブルテニスのゲームのレフィル
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d89c4a3f9066dbdb89a331091992a5e17c62f5f680de251640291e247593f6e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPP301800869.
光の波間で息継ぎして - ウ山あまね × 諭吉佳作/menRemix
光の波間で息継ぎして (ウ山あまね × 諭吉佳作/menRemix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3b0a60d4fa68407b46a70a5a9c8b3d9344fe188c57650b0af2702775eb2817. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPB602500850.