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 0x27b2ad98379791f23d947c4cf0014ecd40ea77629d20afcfb0267f5823bf54e3. 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/373ca13c-dd0c-4051-b17d-50ca45a23930.json and https://artists.proofprofile.net/proofs/artist/373ca13c-dd0c-4051-b17d-50ca45a23930.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 0x8a29de72ea238adce8aec3d9d490b05f72a965b27a47b129f5713e3bed9fa0ba. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:06:56Z), 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/JPI101100739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8b48c7c5aee1845b34c1fb0f0faf79b4b31c77935749c91bc54629db701399. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/JPI101101052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a8f102fa1d395c9639a48a48875fa6debfcb03480042571b7e2ef3a64c628f. 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/JPI101101888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd16967b5d03eaf787aeb55c97a0cb1b42271a45d93ee279b9422ff4512078. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:17:14Z), 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/JPI101100737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a8f102fa1d395c9639a48a48875fa6debfcb03480042571b7e2ef3a64c628f. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/JPI101101888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9117c7fb97ddbbd54d71eec2d1c28669348aea4c633f30768950ac341732cee. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPI101001152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd16967b5d03eaf787aeb55c97a0cb1b42271a45d93ee279b9422ff4512078. 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/JPI101100737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704c6ce8f0f4abdadfdfb1cd6b2155e600f5130b1db09a1087a2fbeb5c824dec. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/JPI101201256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8edfc5198a68c1a59aca961c796ce3e60f90f403352e4cea65928805ae164c6. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/JPI101300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8edfc5198a68c1a59aca961c796ce3e60f90f403352e4cea65928805ae164c6. Chain 2 (Bitcoin): anchored in block 957709 (2026-07-12T13:52:43Z), 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/JPI101300731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4734242f5c3995c92a37c3f8488ad631a9c1277784f7615dac34429e715f675. 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/JPI101300159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e447e6e14726d88ed9ec5f2a1c21c2a21af3e8da9c05b0595775e28270127c5. 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/JPI101401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e447e6e14726d88ed9ec5f2a1c21c2a21af3e8da9c05b0595775e28270127c5. 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/JPI101401392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dfbb8acc6f5ab74ed5e6ca972c577a1c864666297d847944ea70f7d3c41cc0. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/JPI101802059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06dfbb8acc6f5ab74ed5e6ca972c577a1c864666297d847944ea70f7d3c41cc0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI101802059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc540245c8c7e2851699f4a0a3ead94e4bd9f7369addf98be63881b89dab3dae0. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/JPI102000505.
Tsuki ni Sumu Hoshi no Uta: nano.RIPE 10th Anniversary Best
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc4b49fa8bf5feb811036244191cba48976021bdb8aed997a2f711d9e13e07a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/JPI101100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c4573c40bfe9dc049448bdeead81154b9ba81199c34de8b65dff31b280897d. 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/JPI101300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b698f7a51b55438ccc4cd124826f5103814763d2eb97a896e419350e4e6c7e8. 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/JPI101001154.
月に棲む星のうた ～nano.RIPE 10th Anniversary Best～
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc4b49fa8bf5feb811036244191cba48976021bdb8aed997a2f711d9e13e07a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPI101100738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c4573c40bfe9dc049448bdeead81154b9ba81199c34de8b65dff31b280897d. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/JPI101300729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec5b601177328353297e9176dd0e56526f5a716a8143d70aa08731515331d0. 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/JPI102001902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f1ad66e39dbf6f4809f199538828e7a2560e157f16b061870f771c049a47b9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPI102201564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec5b601177328353297e9176dd0e56526f5a716a8143d70aa08731515331d0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPI102001902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5efbe2be2dc7f2198c953949ded05a975ce4fec9208c9cff608875b88b212c7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/JPI102201958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd654395dab97fbc6dc1b056c36340f9af84a0b640cff93e40763588f869ddcb9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/JPI102102767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3006014a4ac38857242157e2be664b86b1981d2d4abf9b87eecab1c3d2b7d. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/JPI102301497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7b73aaf8178bdd43f9dd0fd8e330d5f7ddc7da5c5aa8ea8b122de0f1fd4918. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/JPI102500041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd3ef93197db36d7f6a5747497ba452ee6b29cc48be50b215e1d361bf381e03. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/JPI102500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc08d3402dc8c4a78516aca346693f608ea6a47c43b684fe9d2dab22f62937037. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPI102500156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcb709b3c3ade9a22963a9a9b5f7b026254d718696c04830218e6d000877573. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:25:58Z), 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/JPI102500047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7db57beab31a1af64842c6f2405942b0df2b7ca45db7cd1a34c5948dc396803. Chain 2 (Bitcoin): anchored in block 958865 (2026-07-20T13:23:03Z), 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/QT66J2599144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ec5b601177328353297e9176dd0e56526f5a716a8143d70aa08731515331d0. 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/JPI102001902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1399e8ae3b985b7835655f19215c5e33a20c48cd4dc2d665e7a2c608ee4d1032. 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/JPI101500955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1eb671c87087d8c229c3f50e2d3419ae37d0b861b65207724b3f0dc602f797. 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/JPI101302321.
TVアニメ『のんのんびより りぴーと』オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632c15c24518978331e92453aa83c38c34d1c6699af5199f0aa3a804ba4359ff. 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/JPI101501547.