{"copyright_id":"0xc181a337e2b0cdeed168c66ccfbfa505a169eab69ef9a8abbd6044b924bb8dd6","name":"Bryan Choy Hin Lok and Wong Kei Wah","registered_at":"2026-06-15T06:23:45Z","symbol":"NIM0709626","token_address":"0x27935e89d418e9694098edf6f3641def96384dd5","type":"artist","uuid":"f62b23d7-debd-4e94-b8e5-f058c1be57ad"}
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 0xc181a337e2b0cdeed168c66ccfbfa505a169eab69ef9a8abbd6044b924bb8dd6. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f62b23d7-debd-4e94-b8e5-f058c1be57ad.json and https://artists.proofprofile.net/proofs/artist/f62b23d7-debd-4e94-b8e5-f058c1be57ad.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 0xe7149659c690e04e675c01718c377b5a045d0a6fa92dc43316fbb2f3ef5cddf7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/HKI499121108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9baadeea1d13d0501f9489fa9b64f46ac78c13ef11794ad579085d2b616c565. 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/HKI499121101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7149659c690e04e675c01718c377b5a045d0a6fa92dc43316fbb2f3ef5cddf7. 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/HKI499121108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9baadeea1d13d0501f9489fa9b64f46ac78c13ef11794ad579085d2b616c565. 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/HKI499121101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9baadeea1d13d0501f9489fa9b64f46ac78c13ef11794ad579085d2b616c565. 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/HKI499121101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7149659c690e04e675c01718c377b5a045d0a6fa92dc43316fbb2f3ef5cddf7. 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/HKI499121108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7149659c690e04e675c01718c377b5a045d0a6fa92dc43316fbb2f3ef5cddf7. 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/HKI499121108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9baadeea1d13d0501f9489fa9b64f46ac78c13ef11794ad579085d2b616c565. 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/HKI499121101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff85c25e21b1433f93330634a847dbc052b80c67743811bf2cba48170518965. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/HKI499121306.
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