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 0x2a1f837e1f626b292ef78bece453512525896c5dfb01bb9f4652e88bb89e28d3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/19b1b07f-6357-4ba1-bd7f-494cdc1367c7.json and https://artists.proofprofile.net/proofs/artist/19b1b07f-6357-4ba1-bd7f-494cdc1367c7.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 0x9503f221410974f984c749f37b8cc41636595f2d969e6b5c2ee3afd5571e67ce. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPF1707619.
Medieval Tavern Music - Animal Guild Inn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9503f221410974f984c749f37b8cc41636595f2d969e6b5c2ee3afd5571e67ce. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCJPF1707619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32d4a02e8f841ba10fa0807099ebdf55a18c4f4d19462cbc457d7612cd933d96. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/TCJPF1783802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a803a354f43b4815e1c0471a6e1d486203f300c2c518bea34cf2be119c33053. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/TCJPG1717898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabfce1e59e87afbdbc0018421a1f27d6738af5fd5fdd8e254152b297721f39a7. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPI1808530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb5bd419eee304c5c0e4e3d4f3989c870f35a7685277ed2c1f306d3c9a25ce1a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/TCJPI1808537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c514de9a1c171cf7e786b3c657b0897b2025f1200ecec6aa1ae1baacbfc7dc5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCJPI1808539.
フィンランド民謡 - Ievan Polkka (2018 Live Ver.)
フィンランド民謡 - Ievan Polkka - 2018 Live Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a25365b515db511930a80a086b8b01f75d7ed071e3101085b0b99130bde3cc0. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T23:02:32Z), 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/TCJPG1857685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9a48c170543fbcb00c70b7f60e8f65a05daa7ed1aaac4728e4c2a775392ca3d. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPH1897326.
ケルト協奏曲Vol.3「グランド・カンピオーネ」
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec5538dd805e7310df43fd8440ff6d9d0ff0f7400ebb72debd58881a2ee096f. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/TCJPH1897330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb876a06de7d2f4d1af7d078c194f7f6cf2766c8ab230122b477a2ecc567699c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/TCJPH1897331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc391e59566f5abe0f857610973b3d50bf74776a85f3d28641154234954ed7701. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPH1897332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089c1fe1cee620a1d2a57f78313033fc99479403212ec826fdc3d01c2d3c7d22. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCJPH1897333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1146ab4f147c5a8f5696e293ec56689bb6b730ce5824c981e74d02bde2de9c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:44:22Z), 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/TCJPH1897334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98612eca59dacba5f29a44372d331ed37434b69c3ebb75e101b40286e74abec6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCJPH1898445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b1ceeda00ae25cc3dbc7d314716bc9da6051a55afe1b4ef3cf3c0aa28118a. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/TCJPI1808547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b1ceeda00ae25cc3dbc7d314716bc9da6051a55afe1b4ef3cf3c0aa28118a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/TCJPI1808547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78375b42b0f10b72a8fb335f3f54a69a4cbff14f7924f5ce0ac551d5947e5c0. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/TCJPI1994188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a19913f231a28f5de889e6209ee02303ce34b44b643f10d9dfd153e7933c9d7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPI1994192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512bc637a6032bf2080a26feb6f5eedfca5b7e2c3bb80308cab407091753ef0d. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPI1994193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530a3bfb2d4fd44e9cd7adfad2f2631006847e58ab685628c142d8a93b0e423d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPI1994194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4cdf22712ffaeca387ed41d5cb1f09ead7f56f800c88dee36fc3daffcc069ff. 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/TCJPI1994196.
Traditional Japanese Inn Music Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065a953ef8a9a065ffd4ecb61879165d4801eeb9499c76d49bf8ab41c9f2b1b7. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/TCJPK2024826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03c435241dff63d5206201ce8af86151aa096a55fe51e8e9e7c5124515b9e15. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCJPK2024827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff587283cd2b210c2d0e7f26ade8e03ee4a4de804d329bd9390795982f6dbeaf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TCJPK2024828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd3b81bb5ef3671400150002c6bcfa90112c193b2789755ab91f3c70683c8b9. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCJPK2024829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x455a6427b35a4c92525fa077b73c964ceebbaabcccce7bda8873213b3cffc8a3. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TCJPK2024831.
旅館で流れて欲しい和風BGMコレクション
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb129c3211d2cff7606d1bec6718849ff91f2296ea675ae18415048630d69ec4c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCJPK2024721.
リラクゼーション・ファンタジア
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b0cb984ce1226c7a096e83d55c6676077b3606422f9d9bdaf5330c97bf26a9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCJPR2224775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89b0725dc0ed0020f1a758adfd88e835fa88a63c6d0e2c1d002ef1332bd25fd. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPR2224826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f878196a101c8b71a213cd027333fa543620b640f8e602d285819d29d1466c2. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPR2224864.
アンインストール (オーケストラアレンジ)