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 0x6da49292fe5b57abc8a0318785de287615aa8376f49079566055c4d53e0f49f6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4b5d21f-74de-4897-b084-e76b792a1395.json and https://artists.proofprofile.net/proofs/artist/c4b5d21f-74de-4897-b084-e76b792a1395.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 0x4239c2a1c0f3cf19fffb9e59c828a408efcd22320d80d85ccd1fe0589a08e981. 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/JPJ591900882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a9573a1615b60c482293e8652691da54acb6b859452cc7423ac8825e846cc20. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/JPJ591900883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0cd5e05c462eba08a2773915b77a923b4e3636aff7d996ddc444e6810af569. 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/JPJ591900884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4b6b482b1d662fdb90ffc127102a8b5499c5b7c7822bccbeaee299339f9088. 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/JPJ591900885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf97df163729f826f64648811d2bf0472b9adf86fd330ded397e411be9782cb6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPJ591900888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f1c4f8e2ba02b3b132eccaf51c457989cf1236ff657eb4cadc956a87bd9d04. 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/JPJ591900889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x942cbb10f36b2bbc5501c34bb32c87bf15b3426e688ef7b38b31e8d8dd8c4418. 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/JPJ591900890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc758d936d1a173bae14c465c9be28bf5485200fb0058a9fb44f50736ef8ba0c4. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPJ591900891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27840c18fa5ad5f4c8af8fd3e0f55a1bd5f74a705141fb91a794b6d251116f53. 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/JP92A2207651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf292b508dfa4c8dc34a895714d136dc6fa0c71384c5260a11f9ec14f29e4cc. 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/JPPC02111872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7cc48e911ac592407684ea26b94c3192f3442191ce3b466bd35b642d695c18. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/JPVI02001198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b9ce2f970fd040740c12dc27960749c5d7ea4e810d20e56acdaee319ce0719. 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/JPVI02001200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7cc48e911ac592407684ea26b94c3192f3442191ce3b466bd35b642d695c18. 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/JPVI02001198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x418cc7040640b74a5b1702fda76a972ac64a4be41542352c667a48d8f8c04260. 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/JPJ591900791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedf0fae32494cff377caaf3aaf216a8b776c68100f9ef1156d210fd330a964b. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-21T23:07:37Z), 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/JPJ591900792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e7b6ef7f7d60838fce0b48e9f5dd067179253908065c4e30e5f63a65002eb33. 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/JPJ591900794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e9fe4c6d665310fb9c97b1226072450bdd89baaaed6ffb905d3cf3addcbc96. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/JPJ591900795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64595e3c25ea5232a1312b2fbbf41746616c485a8ac87853695491de4f0c4c2. 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/JPJ591900786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7383f40beee27a9215e6b1063a76819f802c3a6af7a457efc521341a8cc762b7. 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/JPJ591900789.
モナレコ・コンピ ~夢中にならないで~
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaef0aa2d57311555478f6969d94995bad3bc46713136aa8583548b707af19a16. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/JPS809918821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3993e598d0658f679a08b43a6348a7e15c511b08298e3968c19b17eac94eb5a. 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/JPS809918823.