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 0x102d8d0b9fe729e8af71f5d92f458822713a4168c5a7b73d3ec481820c7e0aa6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c07473eb-ffc8-4214-9bc9-d1ac2eb40b7e.json and https://artists.proofprofile.net/proofs/artist/c07473eb-ffc8-4214-9bc9-d1ac2eb40b7e.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 0x69adc3f307e137e23696996c6beb0a5748791dba21405067b83f276f1d825d96. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TWAZ12300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb992449914aef847b6d85a74dec4b61b00dcd043de4cd2466f23429b48b4ff2e. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TWAZ12300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e44d086b6ea714f54e464b61031c98af261ad91a6eb221cf7cf0d976359d13. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TWAZ12300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9794a6f4480e0a3f6764b45717791d04e7e561c43eccd2849b48184ac7e4d1d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TWAZ12400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71326b72b0e4fb5393af062d074acda68dc758e57cf67100e2416b3c1461da65. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:05:57Z), 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/TWAZ12400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3771f2c5251e633ba44addf8c1abe2196b6d342177081cda94dc2e605c2a3f2. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TWAZ12400003.
我就要愛你 (《TVBS 原創劇集 祕書俱樂部》插曲)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94054b0f740c25f6171fcc1f6f13aa2696a345fa97f812f382c8034002893953. 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/TWA532400757.