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 0x0cb49a04659ef9253772113eb277c599a02d49855ff523b6147770fca17fd16e. 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/68f9a7c0-7c65-4201-9423-60e4ce2c45c5.json and https://artists.proofprofile.net/proofs/artist/68f9a7c0-7c65-4201-9423-60e4ce2c45c5.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 0x1834471c0b17a0bc40d8183ca18da2b73bca67510b3747ab00ae7670f08b5824. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPJ591500955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0cb24cab9e577ab29c93e1c1dde01c5cb1390d0e1f4c51ff684208956a6110. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPJ591500957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66ffdd2af74690e1ef678e710ff4086b659a3f14cee686d9b3f639baf5ec226. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPJ591500960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa057a8bdb8f8dcc033e50d6a17245408c770f6e132552fc5e89f05dceb0b8d9b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPJ591500961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336d11214fa4ff995df38ea0b1c7343f556f3790cd940a00b7f01b739bc04051. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPJ591601110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9422e309baeab0dbc1b5d7ee53a00274a1760eaa329dadc72f46e40803b9c0. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:36:00Z), 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/JPJ591601111.
モータウンサイクルダイアリーズ
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c429af230ed258177e07c87249bca531c737052a693857b613ef9077e046f34. 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/JPJ591800678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75181b747435e9a507eb20db7f0abf52322176541f4a84ea102464c4825e189f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPJ591800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4fb2f5d44c31a1df16ae7f714a4fd404526081eaf5021af272d6585471f8aa. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPJ591800681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bcdf1a7c804e69a7ba7d9b722ed3d37e6d44e9b78315ff1a19306a73d70ea40. 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/JPJ591800684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc561fa68e9a47ab08a08424ad718eba7a194f9c898b9a07364607b22463acc95. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/JPG101900179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b24b97bb3f0fa3dff686b906e9b389a5c9a295a93c143e66ddda0f5c7bdd96. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPG101900181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef03c1a90fd2c6c64150d3f194262ad82323396eaa17c34f6e2466caf344ab84. 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/JPG102000735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ff32c7e2b004bda48c12066518805fe932160a2f70c4638902792731c13fc5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/JPG102000740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40183beb5f5c8417f788b2a78dedae4ec07cbf9bb87570f542532cd95d90225. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:48:38Z), 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/JPG102001162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad69a96370a7bd905c847a171a6fcdabfac5f116fe091e6f40b6336bba67240. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/JPG102101319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cde23b9398f4be6075c83d9cc6c0d8c2e72175fb9f4c0a141917b4ef64f95d. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:56:31Z), 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/JPG102201096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364c8f4d6c0e4bb87b1652fe23d5e37643ad877fb0568c1a946a6fad4a4e39ce. 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/JPG102201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ba985c2dc85d8ac673cbc54d1412e470b941fa81472e15542e43b3ee901beb5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:31:00Z), 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/JPG102200515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364c8f4d6c0e4bb87b1652fe23d5e37643ad877fb0568c1a946a6fad4a4e39ce. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPG102201240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad69a96370a7bd905c847a171a6fcdabfac5f116fe091e6f40b6336bba67240. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/JPG102101319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cde23b9398f4be6075c83d9cc6c0d8c2e72175fb9f4c0a141917b4ef64f95d. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/JPG102201096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2469eb58564eb3be58bb1924a7e981679aba7640c8618db4c12facc445e82da. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/JPG102201525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bbf0d1d36a4de9a9b4c9d4935093c36cafbac43801f5759f38326b23816acd. 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/JPG102400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3582ee8def744210332abc9e1bfe5a63a7b7301bb23b9c9c10993c7837bf6cd1. 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/JPG102400941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7bbf0d1d36a4de9a9b4c9d4935093c36cafbac43801f5759f38326b23816acd. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPG102400321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3d5e0f4bf428efa5e47e55f240ecc606b126d9d65d69a6bde96d5a30bd7638. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPG102400942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f93c94edfc4be95e033d880ce7f6ec25395027d1b5ca2616573f8b7de4d81d. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:44:43Z), 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/JPG102400685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd693d10ebc4195aa06846fb8bc79d268ac1eabd442cc10341133936c1e7979. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPG102300326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f773e75861ebd7633f7ed7ce7e64e93f45bf12d16db47f2f73d227b6cd0601. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/JPG102301489.