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 0x25a008a9d7e87e532689092368217fb134bd2a5054518756128d987cb93fea9c. 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/fbc4f653-ee56-4674-b136-28af546fb003.json and https://artists.proofprofile.net/proofs/artist/fbc4f653-ee56-4674-b136-28af546fb003.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 0x6359354c07e7df6f3555a4e9788fa5f69aa03bf4f1f077fc97ebda50cab28d71. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:55:44Z), 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/JPTO09638380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bfab5ab3107b74248d074b227b70bd16074bc44950442d2d7e878266aa0d35. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JPTO09221950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0e783349ff368fc1e3a2649d60521feafa268b20a3b362cf5d8991cd012763. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/JPTO09301120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38ca6bc5f76ca5dddd72a225365785d023814cfc240e8c7cba661b0cd527db4. 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/JPTO09003680.
暖簾の花 大阪大好きや～出世地蔵に手を合わせ～
大阪大好きや ～出世地蔵に手を合わせ～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02279f1527a9869421a2b75e0a729d4206fa0a812c0bcd4993d1905bcbf55992. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/JPTO00401680.
土佐女房/美律子の河内音頭～酒飲め音頭
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac82379841b4d7727e98eefe060e6e6dd59c7af3e85f07c3807e1a045c95a3b. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPKI01521338.
土佐女房/美律子の河内音頭 酒飲め音頭
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfec519d53b22fc31da3c179aa1221a3ba491457810ba2037f0c7fd869fa9e217. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/JPKI01521339.
長編歌謡浪曲｢無法松の恋｣松五郎と吉岡夫人
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a225aff992ca4c4a2bbbc07740a92323ce6b9b633d1fee20740d3346e805536. 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/JPKI01621032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b570091cb61bff3f47a52764f464861d50023431771251c5acd6095e45f66dd. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/JPKI01911249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f481ed023ab321bef840f16262f8a7ce5897015a93b2356c40b991aae1b1f89. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/JPKI01913488.
あんずの夕陽に染まる街(ニューバージョン)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3aa2aaee5aa8eb76a701fa8597b124526507b3a6411dd40683c7373e8971d1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:26:56Z), 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/JPKI02113666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477688879e9db7b1a20f6f088296e68828decc010d3a73277093a04ddb247a8d. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:57:22Z), 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/JPKI02113667.
35周年記念 中村美律子コンサート～人が好き 歌が好き この道をゆく～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793570027671bce1eccd6a5e226681e2a29d3171348a9a202b5de52e48900c8f. 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/JPKI02210645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38ca6bc5f76ca5dddd72a225365785d023814cfc240e8c7cba661b0cd527db4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPTO09003680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb29f76072dde7be83e2bdff5ab47291aaffba6d917c2beecc821f69ac30b1d12. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPTO09522310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215a08af102ffb7e9b2e737b1b0f614d023d34aa838f36fb669e868b737fbd94. 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/JPTO09522200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3b058c745d18ee3c494b26eb45d195b29051df31b5fa02015d984528776078. 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/JPKI01217238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dddd94ceb9690646d4b9031e0afe5a92f9b530f17f0b448fca794fb00e347f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:24:02Z), 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/JPKI00814450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8574836e42ae5dfc6a9998acb3117703b29dc01f75ac972508edbcf2dc2e1af. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:07:41Z), 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/JPKI01013127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836840d3d9227646738e5271254254143122980f79570814a93de8898fef7e17. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:04:21Z), 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/JPKI00814451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13be29ad3be05ca2ceac51e753d79215b4596fd66cbbba91fac92835d9b625c3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:53:39Z), 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/JPKI02310425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2587c298baedb7c2c45e14a49fa2475a70b6afc666cf520c017984a6b57d2b0. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/JPKI02411489.