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 0x7662c43f15f32ace9e4459fee7c21274df66174308168b8c2e796c24b5afeef1. Chain 2 (Bitcoin): anchored in block 953674 (2026-06-14T19:07:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5a415d9f-ae93-4ccb-bbd3-b8059876f26f.json and https://artists.proofprofile.net/proofs/artist/5a415d9f-ae93-4ccb-bbd3-b8059876f26f.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 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 0x7c4607c11e0b4e5c71b7d756a22543ac009fad5f1566d82edf4f90a31c55cc43. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SE5BU2135562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0d610b1ba5020e2065e8c168dc66179119acc98f724adbf0a265a3e9ffe3fc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/SE5BU2135563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x023b26f2c06f5e70ec63fb7afb879015badef85dd330e84caf08b5e90f643b5f. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/SE5BU2153018.
Mirror of illusion (Version2 gothic oriental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e550a0f783057469fbbcbfcbb6b91eaf1e5f43da533b0a1aa937565e6b7164. 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/SE6I32191336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0c1d35766d9a3854b69cca171ca1504a2be4fff0ff21a4866bc7bd83c4944f. 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/SE6XY2134579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e550a0f783057469fbbcbfcbb6b91eaf1e5f43da533b0a1aa937565e6b7164. 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/SE6I32191336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6321745af354ecfdb9a1145bf0563128a7200129d0fc0e1dc25cbe77e7d883. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6I32214861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f16f03e3953c258e9f0f36cd442995a27691f593da6d9c37cb8f4bf0763619. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XX2249848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20cb4fbe6cad945fdc1c763754fb7b04a6f85cdeb3cf539ff329507b7797dcb. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/SE6XX2297522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb43b80008c1e9d9d11312546824d62a903970cee6241c11cf488726e4a45de9. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SE6XW2207231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9cd854909ce51f906e19025b0d47bcd949dfc942578c5d3fa51798db2083b4. 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/SE6TI2340671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f858bfe7e54be1a5e483f2d47f125d572a930e5e462344a6b21a4d71cfd008. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/SE5BU2514953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae641a1639b39916cd72c9e645fca186b3f25353c9258cd4c7bd4594137930b. 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/SE5BU2514954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5d4b45b421084ad68e5e114ffc5a84ef3374ede36f207bcb9d671025ae95d7. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE6XY2570494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f07280addcf41bb03386b3eb7bd2302b1339dffa611f654e8b783f1ae0bb25. 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/SE6XW2514201.