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 0x5777b8f0de9195468a4560b7bd620c11d1b5f0fd37edfced47c23b4dbae085b8. 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/85998f04-142f-450c-842b-9867f73cc915.json and https://artists.proofprofile.net/proofs/artist/85998f04-142f-450c-842b-9867f73cc915.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 0xc5ff9d313a017210fde2e18c63a69fd37e3008f219b949df31d2f23e3405c0ad. 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/JPKI00707410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988bd9bd05b616cd7e6a1ff769b0814bcbe4b8cc8cd545913d1e0da73948fdc6. 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/JPKI00707416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250c6512a3c71ee215eec152a0fc1e7f32f6e3132759b1a786abd3498815c7ad. 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/JPKI00707417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3d59b46d5b060248de44b3171d69de69cf360e29346e1ed760aba0070ca8ca. 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/JPKI00710790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c1886b5209d23390b4a5a07e06f2d2ae529878b7b188d765589376a67b37d2. 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/JPKI00710791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3bf9e5d9f186f25843f18e64d20cfae45f118d44b4d15045350a764e7a9846. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/JPKI00816974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a76b5c60f4748f185dcd374d805c52b1540320a142c116b55b4cbeb495381f3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPKI00816975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94b06a8fce46e0830504d9396742d7761c304c1a3e7135fa7b3787bdd7f86c4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/JPKI00816976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd779cf02570f1d83f771197d729ccd1a48ddc92874788e8ca32173ab9d9c2534. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:10:49Z), 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/JPKI00816977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0027577b8b7407536dfd675fd8cf70e577bf6d2f76ad5a8898f5acfcd1b65b1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPKI00816981.
人として軸がぶれている-少女が違うVER
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537f8a1b1eeee8d962c739f6016df6dd222353e14acf179be61f7ce15486411f. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/JPKI00816982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799ed138c1df1e06d736e38778f2e88d20383f8fd21f046317a575f6908488d4. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPKI00816983.
メビウス荒野～絶望伝説エピソード1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80191dcd23f183b44339467ba408ae6b7e240d091d120419f03cdc5ac659f292. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPKI01112021.
絶望大殺界(さよなら絶望先生シリーズ 歌モノ傑作撰集)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5ff9d313a017210fde2e18c63a69fd37e3008f219b949df31d2f23e3405c0ad. 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/JPKI00707410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3d59b46d5b060248de44b3171d69de69cf360e29346e1ed760aba0070ca8ca. 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/JPKI00710790.
人として軸がぶれている(テレビサイズ)
絶望劇伴撰集(「さよなら絶望先生」オリジナルサウンドトラック)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd1ea24905793b350ad1b7a06dbe010d3ef8383de00034a82c7e55008f136b3. 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/JPKI00708681.