is a Japanese word for foreigners and non-Japanese citizens in Japan, specifically being applied to foreigners of non-Japanese ethnicity and those from the Japanese diaspora who are not Japanese citi
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 0x9b74e639ebf26b5745f45ca8faceeebd4a3a02753a9f467f0af7f564fcaf7858. 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/3f70b342-dbaa-43e1-8f64-b76afda0bc2e.json and https://artists.proofprofile.net/proofs/artist/3f70b342-dbaa-43e1-8f64-b76afda0bc2e.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 0xfea8ecc1866050a2b20bea187d307e9de7a2b3ee708fd63a81c4a6c88d29ee07. 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/QZWFF2325167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c5f84b08f245132a8adf2849933f1411ce1159a9412a6c0525cdee9c9cf869d. 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/QZWFF2325168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a2107e20b4601becd171bea22abdc1a4a36e8ae7ef3a9135f418fbbe9fc32df. 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/QZWFF2325169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87ccb3b15b7fee5bd4cd0c07229069a5e6fa198f1109822407bfd06cd2778d5. 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/QZWFF2325170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbc1ccd8d59f6f1e0598dbf30b961a5ddec04e4a48cf0d853c6b0aa4515b856. 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/QZWFF2325171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46586841d77d4af2b0c85728979b40a9c72c3cba9c7519e049e72be157f7cf73. 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/QZNWZ2245307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59e55f950553849ca880dcf702a35906928e92a203463a86724af628125b7c8e. 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/QZNWZ2245308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e3c1b01a2248088a25e7a64915e619b653e5f736c5a832e81fd14b88ab8f3e. 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/QZNWZ2245309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523940907538f7a8748259fa25643f6d2ae02a39b681e58446c42d1889c8e6d2. 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/QZNWZ2245310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d946a598bf81ac5328a09c345311878c2833b02e09dc218cf312fcb6a22d5d. 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/QZNWZ2245311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b9e2bcd0edb531c9b1138a2b15d9bf77cb1be8e37002911251746044f8494c. 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/QZFZ72223742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x798dd82d3ebd4e0340a91b87f0962f09f0ec32adedaa7b4520647f128049e980. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZFZ72223743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd902df11b187e0f0d6b6a8414009f61e0ff53f984169aa26345dad3b6eb25775. 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/QZFZ72223741.