1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4b576d2002b6ce7df9c2553cbbc6e2e82b4871c97aeda25920ea629983527344. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7f578926-15f0-42db-8c36-abc5ed7f8018.json and https://artists.proofprofile.net/proofs/artist/7f578926-15f0-42db-8c36-abc5ed7f8018.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 → block OTSBitcoinBlock must exist at that height 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 0xe820f9ee2057cf58020180186165ccc58d2131370791083338600ab786380bd0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPJ902012300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f1f8bdb2ec2c4493004c9ad15d72fabc4fab1d64b34f384c90695fe7c9c933d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPJ902012310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b98c00c021eb4dcbaa1b5fc445197efbb66f90f7f7a5da92359480f48b9b182. 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/JPJ902012480.
グッドナイトトーキョーロマンス
ドラマチックピンクビキニ feat. 藤井隆
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b26842cb37d9aa6bac1d5a500e8a795de0a556b6cd64502e0cfc22d4d0b5e26. 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/JPJ901809340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546f76e230cfddb35cb3b66924a2b40461fb0cff482c31e7e6dc87115f9483f2. 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/JPJ901809350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5685fc1eecff7a2b4859850bdf2018f8ef4f4ddd45441a74e2bbbdbdbedc1dcd. 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/JPJ901809360.
ミッドナイト☆パパはダンシングキング
ガールフレンド・オブ・ザ・デッド!
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c9a0995fce444ab823f09a2ed74d4ded2a72d683bea398986247e6100216dc7. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPPO02202290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ac2ae81fb88c6b752b5358bcf9ce708cdf3dda8f3e84d3eddd2cd1ec038874. 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/JPPO02201633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e12986b4946b1dcd1196f68f2a831f3e142a28aadca6a39fa732c758a62d527. 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/JPPO02201016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8739522f5f3f1010bef48647b9d9251821861a7ba29f59f7b9b1769b472f598a. 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/JPPO02104667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cee6459caca5678ee6260c9afb3fb7b352a11fd7fbbf614cd24bd31fbb1cf0c. 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/JPJ902106690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17c4db0a90699f5dcec23bec5ff3809f33562ce5ea4fe0fe680dddd34af47d21. 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/JPJ902008800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d105f246aa694a4fb638c1990f5c93c25ea5a20ea67b8dc0bd3c083a0a428c3. 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/JPJ902004260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d263fdb8251f2ff7c15cd85bb0bd8b4acae2773c08d089e0a5754929d21a9f1. 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/JPJ901705110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca91f5ac360e6a9f66ca757aa4482fd91cfd0d4477060b6209956fa35819d3b2. 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/JPU902203348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ca8676c80335b0f6df4d2d366ee66b3977c0895723c97a47da371f47492a52. 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/JPU902203349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a0bdd5d9c74ad86c9313f8d0ba463575d9e60e127d35cb6bee9d45e78f7b1e. 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/JPU902203350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa183947d24d612f3a9c1b57bb61a8cb5b0fcdb4706c89070c14f3de34659925d. 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/JPU902203351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d954c03baeb3416e6770234fec4283ec8fc9cee498835187ccd264482ee16c. 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/JPJ902200520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf09f4f7fc267971f0b9c99f7d9a5f4e29fa6d73c11fe5ffa54181b064d4ac745. 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/JPJ902200540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeec156c365f87f5f2a628c9b61e17a5bb11ac0155fd65c2a724af4f359d9eb67. 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/JPJ902200560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa10b3993cfdf69b446e2262f10319cb0dc585cd7f292a6e77cdee2dfa644e27. 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/JPPO02100710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf9bb9b5930ee7a9b7d99200c1d718e9ae198d3ec52ed81e718d718cf7c1de. 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/JPPO01801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b270b7a975c5c188e183e4fdd30b887209b7651e2b68564cf445ae6cdd8f020. 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/JPPO02104218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91951169b3a6dd80224ff7cf870e74975a5d13fdaa63d54b7922c8147829b303. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPPO02104846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e83f5fdd7c6821904ee2efc08013b814f4dd39c488f45af1fb75ad9acf6a76. 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/JPPO02102322.