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 0xc93fb3e16710ab368e860d49554a1f509062e92121ee93d590766d8ed96977b0. 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/b60c0229-5795-46cf-9bf2-19681278c286.json and https://artists.proofprofile.net/proofs/artist/b60c0229-5795-46cf-9bf2-19681278c286.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 0x3d1174250528f50a746b59b563bf1b112531687eebdcc9a40c080db14535ecef. Chain 2 (Bitcoin): anchored in block 957048 (2026-07-07T14:18:56Z), 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/JPV431800599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2719482fc53668669e59ae4d43b4b47a1c8956a17d68327a0340626dbaba3b21. 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/JPZ921612672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59038f452d055b910f4aea0f9b05ed603ffd2b1b87fb3ec0af1f1233b4f52a5e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPZ921507226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f577a7d0ac09f9258e8a6062ca32b62e423132b600798db64f8580f5bf0bf62. 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/JPZ921507227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15a4b2a876538c7b6949de2f338861fdfb0f153548d52b65243cdd1bc7d8e288. 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/JPZ921507228.
TVアニメ「一週間フレンズ。」オープニングテーマ「虹のかけら」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05c123d0ba5bc395da739fa8b455f40a58a4c0cef89405a100498776082f161. 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/JPZ921404281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3544e2cc6b94d7febbd259bb7f5b126d3d0ada6141e3f2f1402b189e132e1d8. 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/JPZ921404282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86863eeaad4e6a657985132f6e4cbcc80eb36805fd09080102826246932590bf. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JPZ921308617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd655a7f1f8abfa9fc5c6e597552753f661df64a27f2a589cc1378d86f169e049. 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/JPZ921308618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0616c5ff964d10659218fd8155384b2eecde34c743585d8afd9bb4d0de671. 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/JPZ921303142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3cfd8ecd25712bad792b128dc9c26cf87cbbe8e808b7de3b0f02bfa413c998. 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/JPZ921303145.
銀河機攻隊マジェスティックプリンス CD-BOX
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a0616c5ff964d10659218fd8155384b2eecde34c743585d8afd9bb4d0de671. 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/JPZ921303142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f3b9c1c05e91c88e94fb10f44e4901b45373d5905f807b806d94c28374c917b. 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/JPZ921303179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e421b48af19deebcd2df0f72c41e4892bcedc80395ad2bc82e40fe3d99423dc. 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/JPZ921303180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86863eeaad4e6a657985132f6e4cbcc80eb36805fd09080102826246932590bf. 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/JPZ921308617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd655a7f1f8abfa9fc5c6e597552753f661df64a27f2a589cc1378d86f169e049. 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/JPZ921308618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e842695847c6cde2c40b2b527c8fc90c766a68a007a8a21dfff2aade485b9c0. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPZ921315188.
一週間フレンズ。 オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb10c88e43c260c8d149a18d3e06fb74512af86acc6037c58d842ad87c0329e. 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/JPZ921410288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685241a0842f796b59d09c98b7050d9e7a6a3c8f698a418f2dca3b85b2830570. 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/JPZ921410296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15eb84bfb23ddb5c7de33bbefbea9ef43cda6939d4b495ebac2d8aa935cdad3e. 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/JPZ921410309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5726cdea647bdcd9a7baadfdf2ae130744b49771c55db292f2bcb989e0fc6f. 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/JPZ921410311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b9315f4e57c6ad6753c5338630ec5981f4c7e2ead967675109998892d9ed8b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPZ921410317.