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 0x03da74488527a330900eaab395bd5b7fd108a96edcdae22f10af9c848cd4d811. 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/34bb5e03-f436-4914-ac1e-0f0aef30a3b9.json and https://artists.proofprofile.net/proofs/artist/34bb5e03-f436-4914-ac1e-0f0aef30a3b9.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 0xfe372713e9f124483bcadcde00819937de3ad582c4f6392a9f3b8e115f25c859. 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/JPES09802841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x032391979aaba7e96984fef76e67ddf878a2f4001b5551d4c31edccdfb36e881. 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/JPES09802544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370a9aec11adf30b220b99b10e9b0210267afb9def609ffc647a019dd8142ab4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPES09802842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2b5cf7bf998b6c4d1f6de406d0f77ebd6ebdd59e13ec3ab3e9e4cbdeb4b025. 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/JPES09902624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe78ee998d16651a381d10b24aacfb1f9fbd0a7fdba07bea73c3a0bbced5c78. 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/JPES09702025.
君のすべてを見ていたい (アルバム ミックス)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffc29102be3acf9ee3cdc30469a6d9834615a94fb8a5d29acbcfab9fc4ddc8f1. 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/JPES09702028.
ひまわり Original Prototype ('96 August-Demo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5681cd578d3ec3d77b4206389ccfbda6a6c016b11912cb984d4d11f0a86f1f0. 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/JPES00700682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce6f63d44b523fee1cd13cf6bdf1da48b150d735c5b30dd952f35e3148e6e99. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPES09801021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe78ee998d16651a381d10b24aacfb1f9fbd0a7fdba07bea73c3a0bbced5c78. 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/JPES09702025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x370a9aec11adf30b220b99b10e9b0210267afb9def609ffc647a019dd8142ab4. 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/JPES09802842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf256e6d0d9dca181d7bae33b390d5ec3ba4d3ac6b1b54e070076ad574cc287f6. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/JPES09700018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9495d0b768beafc77a1a4cefeabdf1a06ce93bc407f165752d768ccdb5246e83. 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/JPES09801022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dc615e1e2e4036825a86bd2c4de0a6302271d0cfb4ba89b9ffdee2e102ba7d. 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/JPES09804687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f2b5cf7bf998b6c4d1f6de406d0f77ebd6ebdd59e13ec3ab3e9e4cbdeb4b025. 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/JPES09902624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ec2f808cb915afcb734751ae0699b6904759dbb0554fe5a3871ab136c38cd6. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPPO09290110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797b46537ade9e062d3d22e9ca0a9e054492727f14967204b7814e80a8753d19. 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/JPVI09634870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30705cfd7a594a96d354698ef9aa593bbbfa8655db274764f6919945448b447d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPB609926801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406f485015ad8b299ec827642c0bc1a370b00843ea72a3ac4d7f0e69d54e2ffd. 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/JPVP08600301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e4da1c93bd1b723a92e600e219db66a62160767355547d7162215c8b6e17b2. 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/JPVP08402401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x358a0f3322969a994c0f25c490b7f2d45d4154f06650f475c294cd0e60367085. 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/JPF701201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b1366357b8ac4cc2c93cf9a96ad035acd818aaa068ce2e0a007a0cb17832cb. 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/JPVI08908100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a01d38f4f9b3cd6a881075899ebd33a3b83b52532af9e814f171c05166bdac. 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/JPVP08901101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb0d32c359cb0d9172c9f37abe6758537cd05cf22a200fa97a26eacb056a346. 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/JPA308300030.