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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2559c0b3695639f4a88b5bf00b079a94e4288d05248b66778b0bcd5e7d4d2a97. 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/4f2eca3f-8e11-4e08-943d-ba5421dce231.json and https://artists.proofprofile.net/proofs/artist/4f2eca3f-8e11-4e08-943d-ba5421dce231.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1332158fbca2f75b20838b5abd716b1f3d6b5337d4bb7adccf53d791990a1f. 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/JPP321700176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c686590325c6b7d44b5d49814a64e45caaaf9b01aa9c461c1475bd7bb960c6e. 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/JPP321700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63768b480675ab25439f079a55619a2a84927405c083b307d96ce2dc412ea47a. 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/JPP321700183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f672f50b6759bc273ce54310fe768fdb385ff94a93cba6893d56acf4c6e1fdc. 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/JPP321700190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69c1b8906ad7650d00d3033dafebe80541851be9d263f004f607bd358938a8f4. 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/JPVI01903739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf410acac5d536817cb7ab9871ffd4a6e16a7653ab72cd33c3a6f7c88e04dc6. 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/JPVI01903740.
ハルシュラ feat. 斎藤宏介 from UNISON SQUARE GARDEN
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56a09a592117715327df4b9a96aa32a379eb38de7e70c53a29d68fd4bf8b60e9. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:37:38Z), 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/JPVI01903741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854ba1fc53d42fa58101939f1df962e9eb0e4429e60b8beebc5031fd24e6c268. 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/JPVI01903743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac61a9876099b2450dabcd4660c5547d6fc891baee924162323168db2c2d6b3b. 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/JPVI01903746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fcaf9019b62b56ec54c4e6247f2b7cc3b42b0753e30b99d956adb286f4af55. 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/JPVI01755810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f9ff874ab9002f8e8f4a23ed861e1cc79d36524559d6df7bb5286d4d060289. 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/JPVI01755820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76ddd5ef5a7f30701cea1e8b1c1cb2c05b0ee00b0b86e72413df8b5b42a9e5a. 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/JPVI01755830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc0c3ed79d54dd7553fba4b9f7a1b121b7e2f6286b50f48a387dd2c52665253. 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/JPVI01755840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0df70f152da8af8cfbbab356614ac3b969fddd97a95135886c6c12a9e5eba5f. 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/JPVI01755850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00323fb566967198a6750564d997253150c045c2f4a6576ed3fbb3d46937e75. 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/JPVI01755860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a13d48940892144a2b665748855f845e169cee6f8c074e8e54443096e3925a. 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/JPVI01755870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f14f389106f7a88b09c1bddad38048cd4ba82174f9c623f6acfd9015cfb2363. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/JPVI01755890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fefacaa9db45257888a70768bf9f950d537ad3f586cdf0ee87937d730f9cc89. 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/JPVI01425330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf04df5b616f44f394404761951eca4f8a18d79d2fbf598475b17428ad6ec6d. 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/JPVI01425380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb34d7c043ffe75607240a25d90b8dc6c950b504f5ff24cacc155611bec74b6. 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/JPVI01332200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a10301be864dcc2afded75a9fa38f00612250b9920038e8e66f7f90ebefe82. 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/JPVI01332220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f61bee5e70d2fd09c51adb8aa7d943aa1b196bbb6799bf52284f3c8a366c56. 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/JPVI01332240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd20b66f72910d028a7b5ad33d937ce2185c4de7b8df7a37ad471f1f18828cb77. 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/JPVI01332250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029f895e4f777cb12ac40d9bab7b8f86a1a1749d92d58832151f8cac5e8cf69b. 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/JPVI01332270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ea76381ddbb0118cb9fb3f583d5169d363960ad4110e35abc91c9089cb302e5. 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/JPVI01332280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f85be5a043beda5bcf784641a3980fae99e19bbf994446ec207f38a60aaba72. 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/JPVI02302313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe522166c3b3f12f73805accd0c47f72c72b13659c1c808416d948ad0937af15d. 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/JPVI02003146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fef1bdcfe5b6f03cc651d833a6d6f83d12e8ad9484eeb9ad17b474303531e26. 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/JPVI01819100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cf229563b19c2b75d6ee5ec61cdc38f4c8677b81854b0e7c1897a0bacf609c. 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/JPVI01819080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29883005fc9d732dcaf9ef84aad3505da3ecd98e86e8109e5b790f53d112207. 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/JPVI01539060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7736570b6e0281e5f178c48d892cd094bcee05d2de83e7b43e2ca733f8acf913. 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/JPVI01816140.
TOWER RECORDS presents SCENES Victor Jazz Nation
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a47538ed964dfbc29c5ec071a995139d655596c86a5c4de639baed5b8f9150a. 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/JPVI01901367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d74a3080d69eca784d3e573174a5988e9258f75b87daea7dcab83816b4b043. 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/JPVI01901385.