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 0xd140c234745f1231588d20766b3f9456fd587eed3f2790997f78c1edd994d338. 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/afa105cc-a670-42ab-89eb-abf27b53f9a7.json and https://artists.proofprofile.net/proofs/artist/afa105cc-a670-42ab-89eb-abf27b53f9a7.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 0xb34ca4c3d5ea7de14641376f74b7b18f6e57d9a291e8e4ecd402c7b1b92906e3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPPC00800776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34ca4c3d5ea7de14641376f74b7b18f6e57d9a291e8e4ecd402c7b1b92906e3. 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/JPPC00800776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fd0314d956945727e659289fb878764c13b48062b95f435a71d7abc637eb1e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/TCJPH1834331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fd0314d956945727e659289fb878764c13b48062b95f435a71d7abc637eb1e. 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/TCJPH1834331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8408514621b83c1e379614adaeb89a4cb5e26e6f873d016d2b35bc9ea7ff167. 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/JPPC02100828.
Mayonaka no Door / Stay With Me (English ver.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dfc907a2358c2fd8cb951a4bef1fa1e9a8d72a1217c675bdf16f21c2b12ebe. 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/JPPC02110513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed974be5d347513082a12d649d078890bfe3f1ae2157589ad246e8819b73df. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/JPPC02111157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65ed974be5d347513082a12d649d078890bfe3f1ae2157589ad246e8819b73df. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:04:02Z), 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/JPPC02111157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e75bceb6d3a97bbc185f0172bcf39c15569fe570bf3570afbffa09f3041205. 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/JPPC02110895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a4e93e5834d38de7d029f53203d755133db13a45239558a73d583ca1559869. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/JPPC02111612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e75bceb6d3a97bbc185f0172bcf39c15569fe570bf3570afbffa09f3041205. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:08:45Z), 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/JPPC02110895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8611fdee4a861e322aa733630add3fafabae1ee3114f117945407d29234c4a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPPC02311314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36dfc907a2358c2fd8cb951a4bef1fa1e9a8d72a1217c675bdf16f21c2b12ebe. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T22:23:59Z), 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/JPPC02110513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0919a69e17d0c98bcee038ebf9eeb1fd58ffb64cf3a5b8d043a18ada7ce2290. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/JPPC02311412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2889219758aa22ca03f6cb90fe644221d5d8389762559349eb171d967f5008da. 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/TCJPH1811149.