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 0x1d37b8ada49f1edd8db6ee32b70b309244f74c88b01ed021de02989726ffc2b7. 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/e91c1447-87b5-442d-9ce6-0596726ab2f8.json and https://artists.proofprofile.net/proofs/artist/e91c1447-87b5-442d-9ce6-0596726ab2f8.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 0x4c8dd535d2884614516808f479edf9e42b252d5b92f708f25dfe7048c8c629ae. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:43:54Z), 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/JPB641300621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9225f2ff7b67db027d2638d86109577ca475016c1a7cbcfbb5605a9033b3ff6d. 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/JPB641300622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0f7f5bf07ca5f23f9b25dc309d29b456638f533950dc80cba704fe544fe18e. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/JPB641300627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85957bf988582456e6a32a8244d05dfe777f214b0cb3c85b3fc58de1c95c6d3b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:41:23Z), 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/JPB641300628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e648a00c08ff152f30ad25605bbe5e74e771f0aee39497ded050f9ae346f58. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:45:39Z), 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/JPB671602703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa846bd8bce854bdddc8ec92a29b5d5c9eb9d1e71563ef1254a7059a3e98b053c. 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/JPB671602708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d5f91c994dab6a2b5de0ae096acd086b005580da04e0ecfb8e50cd753497b6. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPE471600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1af2ac18af8d533321af3a21f25f2049f431e1e3d9b939b70c212e113c6ed7f. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:20:38Z), 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/JPE471600030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2a4ee9eb007e5f00f9e9fd28ec15c8ece9c6221cc440feeb5cddf5be6e0ea1. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/JPE471600034.
駅までの道をおしえて（オリジナル・サウンドトラック）
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b11bfad5ef3eb46a7e4dd065098dea5b1c83388528dcdc3541cea4381a13791. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPE471900030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f15e35fce2e8f6968941cf115f8246e4b814cb4ed94f503388c505084b3835. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:48:13Z), 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/JPE471900035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8174dba952ca9514843c8fbd901141d86a8a2725d6c9d559bad95a5b1fa42d63. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPE471900036.
MARIHIKO HARA SELECTED LIVE RECORDINGS 2018-2019
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ed7e7472c681b11f8b7d31181e906c655854dc7a61dba78e0f03a584e22d97. 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/TWAE32002088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3c9adb30f04467d83d632135bcbf878d296c92db367fff98d114c0fd9c82f. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/TWAE32002089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e931fb160b6eb5a56481f56ea90d84eb9f0250bbc5be71de376d246f816b8c. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/TWAE32002090.
フェイクスピア オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13aee79d7f253765307a22c1c401ff14c5b30597b4b0c80706316a2db951517f. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/JPZ922203857.
幸運なひと オリジナルサウンドトラック
兎、波を走る オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97beee02b21652b6fd3a9a1076b38748c3572446b857c47a5af06b226f2334cd. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPE472300003.
デフ・ヴォイス 法廷の手話通訳士 オリジナルサウンドトラック
CACAO y los Japoneses Original Soundtrack
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13fa90d337da94af51a3ff97d8783d410205cfc332a917d004744633ed5fe25f. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/JPE472400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68b10b5d83934ec7949f92b84a27a41371106e3aaded7c73731ae0a4756958d1. Chain 2 (Bitcoin): anchored in block 959088 (2026-07-22T03:56:32Z), 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/JPE472400016.
正三角関係 オリジナルサウンドトラック
国宝 オリジナル・サウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d232dbcdc88aaa6b33c07b25f1cddd37d22578b6c11cb81ec1d8dadce794429. 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/JPE302500488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc07591aceb32668834231a62ad4505666e2c6b710984ac9d1a7ba8a6b518339. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/JPE302500489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda64f83b76aeecd4aecdd8ee3251613999cfb062e6563a37cfd592ab475e6b61. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPE302500490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334d371519d0f6097d51e06e5685737341638a053420e81ae789d8b2e3a4a69b. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/JPY862501843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec937799bc8524eb2573fc95288e905f0f9a82d9cd64b261b7e736442b1cd9f. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:22Z), 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/JPY862501845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0795ecc2c65fe660e41e272de0d04c3117fa11abde795976f31f359c0c899fcf. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPY862501847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30141ca5530199aa4a2b339dba231a92c392ab5abf959dec52a28dcef9eedc11. 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/JPY862501848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b3a35e94ee3795dd1ea55b4431898e447978bd27bbd0e5b10092a842901bb61. 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/JPY862501849.
Natsu no Suna no Ue (Original Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0e4fec3ad3ce13f1536bc05a580fa390a80ed19eab50d63687bb38879a4288. 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/JPY862501842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9df857df9934fb8d180e9af75c72a9f9bf22360718896446d797a85ae8b547. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:47:26Z), 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/JPY862501846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f0932c6d8133629ef1e9ce3be84946e673e5255a7658308e2fa5b53b55498. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPY862501850.