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 0xb8b523c3bf63404346080660abe8270d75ca0c9c9ec0d96dbcf5420416e56bd7. 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/2ece55b4-f73c-44ff-849e-249bd2da6f15.json and https://artists.proofprofile.net/proofs/artist/2ece55b4-f73c-44ff-849e-249bd2da6f15.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 0xbc1567d14775b7f5f926f374dc6caf5491235c51e4c64a7b166f31f943e2de3d. 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/JP92N2439322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0acb3acb751f8044ad770282374f2bb553109aefc94bb41e5f51f8980ab1589. 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/JP92N2425452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e03a12adc0a7abddbe6e385675e65f28655c79d1f93fe0d0621774cf772315. 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/JP92N2439323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c8d825b1b702d655598fb1b312553f484e3d9927a279bcf84c42d7d2d63ae5. 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/JP92N2439324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e2ed1072ffdb552f23010d995070c328ab0fafd943abf426ea058c4db2feb2. 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/JP92N2439325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3984bee77a0739581b81afe7d50cfc61bb4024f664f7a4a68c23f128082acaaa. 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/JPV502200528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x787df59ea27777435fdfaa4b789777df0fbf9c43ec44f987e19d92b4c44522f4. 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/JPV502200529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5af62b6334b182e98f2cee51f2b784817875fc01c0f0097af5765baa6034521. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JPE871904020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa85812ef34f58e9a6cbaf91e4c389393934753dc7bd268515d73a358eb26112e. 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/JPES01301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411a3938c57edbdd32abdf5fa32f636d12c0c8341e57acea6249781c72e17584. 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/JPE871702479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73d2259e437af7f0572c04071307a149637cb2cbb6c0cdd85295ad7f9a730cf0. 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/JPE871702489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4bbf736fe8b51aec47d660aee22bb2d66fbdfcbf4bae8fa7b92d8907e06225. 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/JPE871702271.
曽我部恵一+ザ・なつやすみバンド
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284636158e820f43ee8e269da9248276c65281195887420a292e703007d46e40. 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/JPE871501317.
ダンスフロアとカボチャのおばけ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea3663ef15b43b79759c670388f7cae1c2ae49de70b51b6557a82e3379148c4. 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/JPE871501334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95f6fc177c7cacf5e0424a36070a81ba584e160d7ceae705ca7afc011530105. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T18:58:36Z), 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/JPE871501336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27235de76e1bfacaf223281b3e13afd8916f6b678420dc42ea8712a8179a8775. 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/JPES01400054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1003e0dc8fe37bf8031aae09ec1d6b7ce346055e3f79dc40384551b00ecf6f42. 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/JPES01300122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0603e584cc14b40a442752003e8250cf322c2a797224f55fd6b8d832841a939. 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/JPES01300126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697d18186ed6dc3de60c4c89734cdcb025c2743ad61b6e0db5ec722a0c4fde37. 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/JPES01300127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf270426aef9c3613184ce49f52aaebd0312ae677914cefdfc14bb45d5148362b. 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/JPES01300128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453b306c9fe7d08377ac227017b3156fd25ed0d7873e5dd7ee42934b627d60be. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:43:01Z), 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/JPES01300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e979605454f00d4673eab22ce529fb00faed09d338fcfae77f5660db16ca615. 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/JPES01300131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d694f4f51d8e8171edc87ce19d93bfe4ea49967c705cbebab9dc0b6c86c559. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:33:50Z), 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/JPES01300132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x372cb919394733076f269d03613521631ad0afa39d9f4e5fdd3e8792af4886d0. 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/JPES01300133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x298abbb15d3f7cd684f08f46f3606c442ac04b8eedb01a57b698ed16fdde93b9. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/JPES01202270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1bf74d9283ad5dac490d5ca433ff9c3302c8223c2456fb6eb451e98c18326d. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/JP92N2517608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48f7176da33d2e547ffcce5d904a32c641cd69f5f2da735b074226d54b21926. 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/JP92N2455095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0acb3acb751f8044ad770282374f2bb553109aefc94bb41e5f51f8980ab1589. 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/JP92N2425452.
空も飛べるはず/ビアンカ/恋するスポーツ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116ed47588fd1c6e8157baa6ed7abd7931dfc31a0eefbe99cd47426f0978d632. 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/JPES01200561.
無気力スイッチ(みぃなバージョン)
無気力スイッチ(なっちゃんバージョン)
無気力スイッチ(あゆみんバージョン)