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 0x8ad0946d6a1dc73dcff0269f6571727054ec128cee8f69c2ece4417791073201. 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/0ec3beb7-c86c-434f-b569-dbd9f4ce3718.json and https://artists.proofprofile.net/proofs/artist/0ec3beb7-c86c-434f-b569-dbd9f4ce3718.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 0x136b39e36158947f090bbe44db6077cc527bdb57d672a57b1a74bf96670f5c33. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/HKJ342100090.
原來寂寞得多 (劇集《新四十二章》片尾曲)
原來寂寞得多 - (劇集《新四十二章》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f6a589888652c0dfac95cb5f1d6dd3c262b8581e0926223bc693ceea03ca48. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/HKJ342200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b5d610f8e8735a8483a27fb4b738bb319953de90c91f8a9e7dab17db064dd. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/HKJ342350011.
得到快樂的勇氣 (劇集《川內相親》片尾曲)
得到快樂的勇氣 - (劇集《川內相親》片尾曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebe878749b206fa64ec5b96974d0322439ab7892e0cc3e342135b327a2bef6b0. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/HKJ342300002.
忘生記死 (劇集《羅密歐與祝英台》主題曲)
忘生記死 - 劇集《羅密歐與祝英台》主題曲
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d80df0f5563196f30d4317c9217dc8d5ac6848ee0bead1b08b788ec61cecb4. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/HKJ342300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de8ff916f08b2703485907c5a3e4230902c78ab692e724f399cdf4906082cd9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/HKJ342350044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99300908d46de0e215ffc8ff9a43af17deed787d681216b86efdaaaf5dc42be. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/HKJ342450025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ba1d40ff174a04e08a2f87b302691740e9f972b0f16784deb72fd2ce47a7d. 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/HKJ342550006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22ec37b6e7264afb0cfbd1378ac0923faac4a9618081621bb5ef20cae62bfed. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/HKJ342500033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8140b02d78a79388e58fd5be65605c874f54c17d7da3fcd3d49b88bc0b787f. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/HKJ342100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe342997098c20f4d0cbb39a340e6f96def773a102b6b686a2050d3d7316a45d9. 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/HKJ342100094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb31e7aa2a58062e25bc9dd7116f8738d2ba4e3774c9fe2977f65195311b20a. 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/HKJ342150028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd07094e52b0219a257565d40ae2aa5766274ef90d06738a2895392f9838ad1e. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/HKJ342150034.