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 0xafd7601225d9fa55f42d6e8c56c314ac5c8f296755597ba6f8fe451ccb8fa650. 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/6b531c22-9594-41b0-a801-4b0bf5793d42.json and https://artists.proofprofile.net/proofs/artist/6b531c22-9594-41b0-a801-4b0bf5793d42.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 0xbef8e116beeb4ab2179ec4b75be583223d8c33c3bfe3f9a0e4879a98bec68a17. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPPO01504353.
歌謡クラシックスII ～セルフカバーヒストリー～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17529cad2299d6d6e3e7e4867bd28c9123fce2829b8af84446106531ef8c0aaa. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:40:23Z), 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/JPPO01507956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5082ce5f0b508c2b2c76539b76ae709faa435ba94ad396dff8d893aeac5f3272. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/JPPO01404324.
Kissしてハグして大阪 / 星空のエレベーター
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a394bf5ae2a8103f00f1bd6e32118c94596f2a53d11f7da4a2beff6c7510e3f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPPO01615384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b4fe398c0d1a6b74268f99af01eb3ee73c15c6e4294b1b9babd845636c08940. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/JPPO01201872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd543c6352f47297c96580cefe00a44f1dd65a5d9987367208335eecaab682bca. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/JPPO01336839.
ゴールデン☆ベスト レーモンド松屋
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256369a2535be76c84aae3ab70ad70a31d7198abcb54350192a4d370d7b066f3. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:21:43Z), 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/JPPO01507957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd594b587b4c71b5cbef9c9935552e5294a5df191bd0efc501f7b511318b61b1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPPO01804862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x788c2ce9d91920fa78b53e313905f903a94cdaafd57ee572474c7ef9e50ac3e9. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/JPPO01903051.
時代劇な女 - ラテン・ヴァージョン
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07524242c0ea31ffbbd85779fe6e82578ef958ac84dec0bb237210171d86d2d7. 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/JPPO01904039.
歌謡クラシックスIV～セルフカバーヒストリー2020～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b39b3d64449739b93645dadee9729fe5205f65982688ddfcf0b442daf946355. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/JPPO02000857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb87b27efa40106b2ae76a4ae0051c8b6e641e839e10b30d9097aeade78c70896. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/JPPO02000858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0fb4e435e97975d2d94bac193df839009ba94ed21c7fd36af3976f6a7d5c3a. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/JPPO02000859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028aeb6c6da1ae9797efdcf77bc98d4cbdb954bd990fe3373a9aa3a1d704802e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPPO02000860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21398b5ffffcdb24e7a73fe30abd93f64b1b9a60a8fc6a5ffb75ac7426313452. 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/JPPO02103675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d26fb83fb05c53236d15d933501e8f47db91830f97d4804242b4e3bf7def0e9. 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/JPPO02103676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad9c8e5c6ebccba2c9f01046ec91e88a615f5ed4f5b78e4c534b33f195de3c4. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/JPPO02000852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198e428b1af76cef2cc81bdd39ae6afed7e40c37404781c02d51f30e773dbd0c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPPO01804861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc581c25ef8d7540fd1db6a543126cfdcaffcb3082fc2878372db7aeedd5b0740. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/JPPO01904038.
歌謡クラシックスV〜僕たちの青春フォークソング〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43011f7219b7f450ccc861269c19cabcf1963d08f2981e1d895873dbbb17794b. 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/JPPO02202594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cb89595589cac8b2eb4f395f713daebe5de9f185d729aa420eb88119f7e42b. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:40:01Z), 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/JPPO02202604.
ベスト・ヒット・コレクション〜日本の恋の物語〜
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53a20c4f5f4c2b81c388479b8ee00a75c9a07113bcc1c919e22e8bdca302117f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/JPPO02502662.