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 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 0x98bb0a5ca2522f837ec155ecea49d34a65a32563caa69655aff356b2dc6c4bc6. 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/635b5909-afbb-46fd-a95f-ccda086b7afb.json and https://artists.proofprofile.net/proofs/artist/635b5909-afbb-46fd-a95f-ccda086b7afb.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 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 0xa6dfd8405a7880a05008a08a6fb498d83c295eb8d6202d6748fce92a265e5331. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCJPU2224425.
これ以上に好きな人は、君以外に見つからない
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88048d21f81606e7bb554c9b985ce693e8e491c28be69cffed36de48796710a6. 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/TCJPX2365260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3d24ca60a8e21a9990ff7f387942c792f70a676fd969a0a1d236abb311db78. 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/TCJPY2304201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efa75bbc956c571199fc30c2b14424e3f9ef3566524944c6e7959a9ea28f8ba. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/TCJPY2336980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ffe8cbc7667d5923368bb845f6330aba961dfd1f3cbd59683d260d120b7398d. 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/TCJPZ2417980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5a5073fd7623b477e40f903e8ea101cb496f06a0be203421046d341cf700fb. 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/TCJPA2446118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f6c26250b312b1011fb86310e55230fa6e4b5e754118f0b49928ea8f74ad47. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCJPC2444769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675fe6b4481e568a83dbf797435275120d24776f0e2ac1d66bf61dea4040f195. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/TCJPD2578947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c74ac1b02ee5febb823faa9a7b0e0e9599e80a2655c784b61e527ced028396. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TCJPD2588792.
I Want To Be Loved - Sped Up - Kawaii R&B Ver.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c74ac1b02ee5febb823faa9a7b0e0e9599e80a2655c784b61e527ced028396. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/TCJPD2588792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f6c26250b312b1011fb86310e55230fa6e4b5e754118f0b49928ea8f74ad47. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPC2444769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2406f49fd55b0dfbf55ee620a4d0a28efbae26e4c0045edf9dee2d3e0c2c3ce5. 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/TCJPE2573548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d65cf284fe132dac8b16d69c46caad328b7b8aaa36ce1a67b5686f1f9adee18. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/TCJPL2521990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410b8f9598fbd2e30ac52eacedfac724df6db17b87be2e56b00dadfa267d6afb. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QT66J2571643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410b8f9598fbd2e30ac52eacedfac724df6db17b87be2e56b00dadfa267d6afb. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QT66J2571643.