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 0x05230dcc1cfab49e1bbe65d13bc22326c2d96918261a33247da9e3cc9b6f38bd. 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/867ca5a8-ccec-4165-95c1-4ebbda1399e4.json and https://artists.proofprofile.net/proofs/artist/867ca5a8-ccec-4165-95c1-4ebbda1399e4.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 0x60998e9fad74c2dad285a1a72241fe1118adca67ccfb566d9777e56db856db3d. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPD931201017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2857a8aa36a9c71fbb5ee228613e8c5bab299ac849ccee39b5228c4543c43f75. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPD931201022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d1b69bca580597486711f26bd6ee6e0a3f04ca5c9e61295ec01a0eff8213e0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPD931201016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60998e9fad74c2dad285a1a72241fe1118adca67ccfb566d9777e56db856db3d. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/JPD931201017.
Ienaiomoi ~coz we are just friend~ (feat. STEAL-I)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9087c18d59fe39781a0570653a128d4eda2cb0f7fe40cf21446750c7b3e196b. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/JPD931201018.
Again [feat. Shinnosuke] - Remaster Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c161bc7c3f08f3c51aed5fd15d73f4ad22db9b8459c7cb2c76fc9d88919fa4. 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/JPD931201019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x328cb34315df2a3b95d8f31a32041893ed5b48e9ae8f0451bcb1359934771021. 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/JPD931201020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2857a8aa36a9c71fbb5ee228613e8c5bab299ac849ccee39b5228c4543c43f75. 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/JPD931201022.
Never Again Ugokiwotometasunadokei (feat. SHINNOSUKE)
LOVE (Ocean Breeze Remix) [feat. Mr.Low-D]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93160831d5e389f5345034ec122ade0a231713752f25101c3c834bfb91e9ff7f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/JPD931100350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa363ce2b0c4dfd2a55790240dfd40356b8088f9bd99b5cdc349cc5a85989e71a. 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/JPD932200902.
Never Again ～動きを止めた砂時計～ - Alternate Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d25c0c6c16b92bac478bcaf6031eec04d9022b115c5df03f936c60f60d91a55. 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/JPD932200903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207e33bfd7b5375a554f144901a5fb17b2201314134c223468e359c987f26171. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/JPD932200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59ed24c8a18e6b5ae22c40740a2ae6fe3705b893f52fb3f8a73f925b243cce3. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/JPD932400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a571d455e36d941cacf5bec13cfbea82a8483f7be2d19436235dd1c23dc415a. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:44:58Z), 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/JPD932400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046ad54278eec443ce6ffc41037fb5991959da2d31b56b3b64570bd5df43ee14. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/JPD932400286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c95797e5e53fabb1382b7661c88839b2f46f8dcb73e43c5390f2879390f2f5a. 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/TCJPD2406743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6c65f7cda2e8977a29d4e29e28d16133f37d045ac7383156fc1d9ef47b44f2. 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/JPY201102731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2af84bdc4acff34d21d8878d9ea867c797d947fae486896458c1c330f26153d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPY201103140.