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 0x1c253dfcd1034b395c0299ea3e240899800bea82591a31734095201a74c496a9. 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/685476cd-302d-4397-bac0-626d692799e5.json and https://artists.proofprofile.net/proofs/artist/685476cd-302d-4397-bac0-626d692799e5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
404 GAME RE:SET -エラーゲームリセット- サウンドトラック Vol.2
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 0x47e2adb93c4fa8614b56f66532d06552ea3c5ef5a82a76fcc606ef47faf55a34. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/JPX302363050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeb55e2bb4a3777adda75fd9686d4fd4cfe0756d5fe0c022bba6f22829a9b4f7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR502400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139d09143c615d5ec574ececf0de425540d6e7ddc204d05d1d84aa71494e5b8c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR502400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x719627788060a04e462fa097db7ae6ae056dd904ee81844e3d1b813d82fba3d7. 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/JPR502400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x992642564b69f31a35b1e498fbd3c665d28fd66bf3f23e472be78bbef06de865. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR502400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b101575b420b574a7d933be7f4ecea0cdf71183e50acec406cbc5d60ad0df06. 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/JPR502400056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0050a044e0ad9ccd8f58b2bd5e670b9ebaf553d219c633dc0890bfaac88206. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/JPR502400057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b752fde830977651e80e59d98db9f51200b8da18cf72be5e124076a5e3b1475. 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/JPR502400058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0cabff91e586bc7158c2eac280c14009a7cc5710e4a79968741df5abd0f387. 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/JPR502400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd825bad02988b240a4d2baff2fe9809e31a7e72ecd6d1af9901092e732378b85. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR502400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10efb612c0df3f15f519274ee5ff71a96d131abc3f83d5ab00e851ee2a0102f5. 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/JPR502400076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3936f39db1ef62360e942626b9edfadf79e621018739bc21ee2733549f43c32a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/JPR502400077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe105b448f2c69c8fcc4d1d3f997f1156690c715e9c4980ac779c1e021ad8f51c. 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/JPR502400090.
龍が如く極 オリジナルサウンドトラック
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15295f78bb9c7bdacb7ef4aa9cd4ea82648e70004f89519616ac7d3be7fdccb9. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR501614429.
龍が如く 維新! オリジナルサウンドトラック (Vol.2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87481a08c5a6a31801779c6e8110772e518c72d08c4fcdd870f7e42df677d176. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/JPR501408350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7522bd07adea3ddb88ff09338d17f082b3038e0bce40c61221cc233f330469. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/JPR501408364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28dbe01550fee6d6e506c496f9e46d6b27d81b73e66f1ef925a928c6fa15ab47. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:43:19Z), 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/JPR501408367.
龍が如く 維新! オリジナルサウンドトラック (Vol.1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7aca6698eb27795c4eb74fa5d8226aaec10fe19d90a279d55d396c17c467a3. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/JPR501408319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38646f6aaf51c38bd3cefb7b653eaa4a9337228cd929dc6bb4a6f6d44ef40f97. 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/JPR501408322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5b1afaa8c81ff4482de41a4101bbd96a7c115a69b1d1f93574ccc266bd76b6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/JPR501408324.