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 0x4fa06be4646afab3524d31393743416122f0471841287e84f5606a4acdc49946. 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/f4ebef2b-6b36-47c0-a8cc-4c7e6ad2c490.json and https://artists.proofprofile.net/proofs/artist/f4ebef2b-6b36-47c0-a8cc-4c7e6ad2c490.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 0xe29de7f9ea926889de302ffd402b9fcce1c69ecfeb2870a663e3943477e2420e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPES08906780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39f7fd2cd8eac602400bfbc993bf9f30cf7aea8d2c5b390d8d1c776337955335. 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/JPES09104890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f21404362e147635135ce4b7d8da11c7aa6996e6bd8912fa57d3924b30dbe4. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPES09305040.
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 0x9876332e98be9fbbaafab9100974a710ae4c811ac19da125ca3fa65cc2dd69b5. 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/JPES09300330.
出会い〜from "New Cinema Paradise" to "Pink Floyd/The Wall"
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429dcd466a07bdef4bbe6c8dba10501124dc4d435dc8b792260aacf392906428. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:11Z), 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/JPSR09904882.
ザ・ラスト・タイフーン 〜The very best of Iwao Furusawa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0d15a349f01f5bfce59bce51ba708c7e54b6c75764e3d60ae42d03416690bcb. 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/JPB600717512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98797b16b5b30e25cce845fcdf066b8121cb582f14e3f48eaa2c2a092b01e12. 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/JPS100800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0317fdff147c96c2059ee7bc64f6be29c239f41ee6bea668054feff34682a820. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/JPS100900019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ce4f48f864d474f27fad693c41937c4e8827eedb6c8259b06167010b1bde55. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPS101200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48dbbf88bd61d7f33461efa0e4ba4b6a59dae47da19198b437e10cdb03bc83ce. 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/JPS101200037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc655919ef911a21afa41f709cf49de8a5439fcf994ea98fcf3f451aa2456772b. 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/JPS101600021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2bcd1db33280b2302a7fdc013c33909d4534b607f2c05ab15deec423dbc07b. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:07:51Z), 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/JPS101700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11b1db29bca127ccd6d203cc6a5e951674abae07921624ec67795c60eff29c38. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS102000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27eb1d5ba4b6ec754817848ed539212bd477d0a39f1c0eee6c2331dc6cfd28da. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPS102000033.
コンチェルト～海～ Violin Concerto No.6 'Il Mare'
サン・ロレンツォのヴァイオリン～月の光
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0941d6766d34c669ca028135bfebb4ba1f4233cbca9b82c3ef0fae70625f32e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS102400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab2c7b435f7196e9efadf670f153273a1a44feedcec9c4a0769cc6cccf80a3. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS102400004.
ヴィオッティコンチェルト 第22番 第3楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652f8107631e7e77c49044ec5be6359a33c9b7d76be67c19061618025ab593c6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPS102400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbb95c9f33ab2e18442cbceb6e26cd2861a4526f81d93511c48079a48cdc4a49. 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/JPS102400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadef3e3716fcc95112130648a577417403729721702c4be6d17633cfef7f4829. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/JPS102400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x483dfb7eef9fbf2533ccf9bc361326aeabb07d4f0291ea57fa423560a9ed6ca4. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/JPS102400002.
カール・ゴルトマルク コンチェルト第1番 第3楽章
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886a6f5901b6445c616b03ce9b0421ae660f387b08291973e8a5fd1c8a7c5600. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/JPS102400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a396ed04b0048a95812b8678466061941072be1d82b7d6e2390850daa7044c. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/JPS102400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837fcc7d0686e4a699465fc035bdc812db535ac9f7b321c8906b3b339732d4fc. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPS102400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbe4c069ede09ed52fd15f55933b2f5dc9c0fada6e311ab9611a1ab198ff644. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/JPS102400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c6a10cc23efb1ee95de4d61944aa9482a432e69111f374f904d2c283201904. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPS102400009.
Les princes de Paris - La belle de cadix〜Rossignol de mes amours〜Maria-Luisa〜4 jours a Paris〜Mexico
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f1fa719e2eb66b67884b86c727233a7e54062a677e2a6cd1d49550191c62c70. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/JPS102400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8703a6b2a3e61e2a068a16cf648e0d1fcc4d44fc0060720bf8341f8dd8302bdd. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/JPS102200037.
Mr.Lonely (with Philharmonic Virtuosi Berlin)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4c241cdf732b943004f90e53e97a350682e5297d861981cad861a06f80350f. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:58:47Z), 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/JPS101700017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88b1487c513d6a09fe4ae4d7c2ffa06826274b69fc4890c0e8f7a398e65d4ea7. 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/JPPO01409268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbf42850f66e8e32c64acb65e726b7162a47c01701a7f7f18306a39182b2493. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPPO01409270.
TFC （Treasure Finding Cruise） - TFC（Treasure Finding Cruise）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30150988d9650d5a3934fc355362c6b3a77366ab5e54d8d89a0e5ed8b4e941e4. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPPO01409269.
Liberportango～タンゴ自由の扉～ - Liberportango～タンゴ自由の扉～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fda36b30c881ec7125dd0332061736f90ed913fb0075fe55a43e867dfc3bcfc. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/JPPO01409271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe87ddeb4088e450aa003b21ca203852d0fd928ccc0e23aa887c581475a8af8d4. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/JPPO01409303.