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 0xe3f8a251830d1a1ae9c8e4562ccba62d389b545307b36b11f32c9ef0f94ab78b. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d32e765f-6dd1-412a-a6f0-95c62874c102.json and https://artists.proofprofile.net/proofs/artist/d32e765f-6dd1-412a-a6f0-95c62874c102.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
奥野真哉(ソウル・フラワー・ユニオン)
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 0x5e5b445fc20d0083855b93f389f51a739ff68d4b31d8497d719a41b2e224cfe2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/JPTE01906750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8692740250e280273205a1219cd604ad78e70663cd219b1a16748382c0f6058. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPS802351985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5af8b1074d0456e24d4755432676460c32c767efa7216d11d035305f1c38481e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS802351986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41fac49315e151f6f89e4c948301708a02268417273b2cad16cc8dd623d17eeb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS802351988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x180c0ddecade01b6822e0f4f5f09668bffd828839afe7b682d840ba827d1fd2b. 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/JPS802351989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x531f458ab9ee5c3d9c90ffc3bb255f561bebfc5a283fcfc6b0158e8986407a46. 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/JPS802351990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58949e6afe59cb2f530147f3b99f6aec2d5aefa045cc80082f6d0dd6d3fd6b95. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS802351991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x989483d5ce455bc7a6cbc1bf31f1114816d62b780107c25609d2bacd2d9b2b9c. 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/JPS802351992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d078f4e4228b3805738c7d9de56bf24f45a7ed299124f3769ed27091a3cf1b3. 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/JPS802351993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c07c43e03617985cd61493c4f97bd681b15fdbd67dc4ab6b6acc8cb8d41079. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/JPS802351987.
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 0xb8503370e2afb9dc203408ae97b7417135f07535e7ea7f3ca80ab8f98ba25922. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/JPS801964968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7794670b1914a68ab07b73c6326ab70424bed7fd23e8e7973ddb77acfa3dd59e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPS801961177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5649c7330d072b81a6e86e2bbb94b7f6b8333d467eda814502712a62049d91f2. 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/JPS801961178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55eeef86a1210a1f52965f384809fef0f7b2da06f3b2eaaf34888483192e08c4. 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/JPS801961179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33701faea35e8906097e2f37237afb110ce836dfaeb87e930d3aa7c0ed65b84. 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/JPS801961180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2386f2bad3ef1ddbb2fb76b4eb84d7494b0b31682d50cd448a9d7022b65d36b0. 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/JPS801961182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ccc48b9658db052358075d3dc01fde7150f2c4b0656530ae2d8b1815e76d14. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPS801961175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a3d2a3a9b03acb08a5bbae1ddd0084856ad120548bbcc8a05e37d4a48c02963. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/JPS801961176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2279c879a95fd8e5cb052b17a9e3b76626a7fa8c8f4c0b32c67b3d4f8363300. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/JPS801961181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f4d547ee6ef27915f07905346c4b111ac35f0617865767f7ab9eb3f7a87ca7. 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/JP92J2402250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77eb8af799becbd4b57d3cf932eda70af9364ec37286f1e849e2051cf24d32f0. 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/JP92J2402249.