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 0xd49fac31f901df4f5af93709b84caeb76c2e49ea73df8f3602d50425acdf57d1. 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/5d771501-48a2-427c-801f-9e3e2e5fd6a6.json and https://artists.proofprofile.net/proofs/artist/5d771501-48a2-427c-801f-9e3e2e5fd6a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
LoveLive! Sunshine!! Second Solo Concert Album ～THE STORY OF FEATHER～ starring Watanabe You
LoveLive! Sunshine!! Third Solo Concert Album ～THE STORY OF "OVER THE RAINBOW"～ starring Watanabe You
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 0xa3a8f47614b50f51a088a34cd64660adef56c4b8a09e201dbec279cb9153df85. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/JPI102300830.
LoveLive! Sunshine!! Fourth Solo Concert Album ～THE STORY OF SUNSHINE!!～ starring Watanabe You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e7347d4f1b328092a4c5da0764a77adcd6082606341a2412a1961464ac9c5a. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPI102500642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11d92cb71b0e5376ab29848a7dba3e8bc55555fdaaf239300aa09cc1c4c4546a. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/JPI102500643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84b4c04e59afaf338afb8dd0c2af7318d70f1cf2c9a8e2a20679a07941945ca. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/JPI102500654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceca22b1587587d61d74e178bc424dd92de656c49654d050d16f2a6122d7494. 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/JPI102500644.
BANZAI! digital trippers (渡辺 曜 Solo Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b41c904a2f371b029e2193bb78ed5fccf8630ff34d10fbab5f07b3f4ea7a768. 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/JPI102500655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1efaa1c975add6cd6b3a46d30e1a76ef44789b6d7ac6ecb1e191cbcff3634cd6. 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/JPI102500656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249cf3e65d147c39b38034e5afc3886f43083b58df2535074ee93fc7e637047f. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/JPI102500645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29255368503f71f9b37ab0c7655b9ea6c0a188956f3716aba1818c7e9bdf64e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/JPI102500657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b72e92cd15ad2b3e02c9c93552683c6b2efbeae5eb65606566213b390ba36d0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPI102500646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fee858035bd6c43400681f4850feaf9ee6aaf7e0ac7e6d88258c79409839689. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/JPI102500658.
smile smile ship Start! (渡辺 曜 Solo Ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d2023305e5f6619288219c5de852afab7d7b27aab9a9e3e20ea2f83ec929a1. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/JPI102500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13eed6e821a9076ea08532f09f2717645eea84590773fd959f2ffb5bf6c93d07. 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/JPI102500649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac50eab1d7cd3be7f0bbde6701f94e8047772f5cbb39dd1a177ce376c7c355. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T06:33:30Z), 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/JPI102500661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6744d8ece24a2b95b99abdf9c3985310ef0a3a1b6cd7b98e8dd1b5ca29eb9f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/JPI102500651.