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 0x389f3b222a2a5da550ecb744e4aab56f83bc5b8e6ee92e65b4ce50c3647fbd19. 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/1c4becc9-9995-46c0-9c0e-c097e178c336.json and https://artists.proofprofile.net/proofs/artist/1c4becc9-9995-46c0-9c0e-c097e178c336.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 0xb0d06f4e3ce198b0ffaf8280f97af857462588693a46c383c6aa8ec74ef31efc. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/JPVI00012310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a41b3b6ca026576ede343df135330c616ba220992f55c7c6e472f5a53b8d58. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI09929350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983f68b0cb5d4eba86ec56ffd09071439e4ac0ea6928c7cb2b408bf5c92c19cf. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI09920560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e3b1582df5489addf43539326c2417d06bafd4b11cd35bd6eef848f4ec255. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/JPVI00012330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c58fe6bf455683e32bb0b0b7f6cd23b13f254bc5986c3c1a64dbc10ce5783a. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:28:03Z), 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/JPVI00106340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303daf38d00a72ffc12570b8a07989d4a2aad910c393b2123be871d56ed37d73. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/JPVI00217530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d94a25ce31950b3aa792f315dfb43ec45c81a73f1d927898ce5426afe5a7a88. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00304000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e5ae45ad80e10c6391d02680b856d9efa8c4c5151bcc7cbaaa8cc5a5c4f9f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPVI00310780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d3a1cadb8293865bc4263ba9530d7dcd226a0219481357668a5382411e49ed. 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/JPVI00310710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946b39c21911f97faf5622e29c284442a605a8775c95b5c30f7c58725571f3fc. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPVI00239560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0859569f2d9225bdf5a555b0915e546c5ce8f60dd94911938f2d8052f5934d15. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JPVI00310720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe31eba17511111011b9ea3a503c919beae8e9522282a4613dbccad64d9c8f472. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:57:06Z), 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/JPVI00310770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc24ba77518af809d6803492670c58923fd2e0ce8d024e7953b42ce97afb0df2a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:23:34Z), 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/JPVI00310750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf07c6665d1342fb4a6120bd0bcf902f1c6f1b5fd84b576030f89a526137705a7. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPVI00416990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10ee1b2e8188cc61c466c2585e2e8b361f91b622102d82ef1fb03984b35a738. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/JPVI00409610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822d82816c4af132c09b1155ac43e3672b5122da8532c4f54c7722d6f22fc941. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI00507230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa3a23edb59d31685d5c4ebe856225f0fb9854d8eb094f7fd5c6bfda5a57646. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPVI00624450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c620afed13adedd332eeb6ad0a2f516cb776ab961a3f1ddf03366468cce65f2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI00045220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1a07ee628864b7ffaa3394916c9bd56615910f431c487454c3739ebd40bd0e. 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/JPVI00130670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da81e6d09709106de394fdacd86fd8802ee5645d7d3289593286e5624a9da9a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPVI00140300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe929ab15b466513da0fba99ee95ec1143c7711df81403082652cbf0ea54572. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPVI00416980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60ed0f1b93646f465ca4e6ccd23604dcd8607d71a27162f0b70f94265036a79. 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/JPVI00740690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bbdb5ff3752e0d5c7a7e218e1607f44b848bc858fb2b32e8f4e931a41a3b7f4. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/JPVI00800950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0fc61eed34176e67d04eac9fa01ddd64f692d2a8dec22709a51242c9bfc69e. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JPVI00801110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608228c3902331cfd059390878ce06217861f611087bc6670d8cbdbbeb1def73. 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/JPVI00826330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61277c90b1d9e95cecd6eaf48281751dc7c6c6ba7f356e5ed3959c4cdf2ed187. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPVI00826090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61fa1ac47a3599c6349d2d131fa1cb9751025927bb0e4e0e63d209270e59af84. 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/JPVI00826340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1ffdb8e29505b3ca0c02befbbd9165cea0041c3a7bb7849ad29dd10680838cb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPVI00826400.
つじギフト～10th Anniversary BEST～(Special Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38cacb1bcc214ff655b0e98a25ace48185c5924cc950d7d159beacda8f5264a7. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/JPVI01225340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10d29ad6aa686c68189ed3c499be9e1887f7d0d34b103fd0ba8026bee366dbf. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/JPVI01843610.
ドラマ「竹内涼真の撮休」オリジナル・サウンドトラック
Original Soundtracks of TV Drama -Takeuchi Ryoma no Satsukyu-
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa996707b1f45834bf6b15337bbc4062c6b0bda238bc6652c93555dbfacb1ff86. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPVI02102073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e74ed175945714716c920756e45a46b03a9181ed74e53198c6c9650cab8dd7. 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/JPVI02102893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7148780efa5496618f885a64a08df8dd38ffbddba93952489b99e82c639e173d. 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/JPVI00212080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5816163c367d30a381dd6537bea1e5afaa242999101fa367de2ba5938f54d9. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/JPVI01225160.
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
続・人間万葉歌～阿久悠トリビュート<配信限定アルバム>
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589f36695e4dd8db7e11c20c11e2fcf9e0a10bcb78c376bfe26e7de223b6f491. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/JPVI00826130.