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 0x08ba096241d85b53c60b126ca070cbed6506e63243e31a13e45256811e3c02e8. 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/957641f1-33bc-4607-a253-7c7fac6a0be0.json and https://artists.proofprofile.net/proofs/artist/957641f1-33bc-4607-a253-7c7fac6a0be0.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 0x82df1fa8490f854efdaeb82e636a224893f75a4b15c248cb80d82ed04c28da6d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TWA119500503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4a526f45257f5a46c02b20e65a8a4225c57f5af2454e5f2719aa055cce565b3. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TWA538518401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799a17de84aec585b3571e110af05765d6a1492c5cfce8d3d4204116e2792d67. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TWA538518410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cf3e42f6cff51294f1f501dc3b65b2e74b0c00ea3f7ce2f712c39ce9b8ca94. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:11:12Z), 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/TWA538626206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001836309fcbfb2719adeab06f225c2185cceee16ee514d5edd5a86dbaff3585. Chain 2 (Bitcoin): anchored in block 957633 (2026-07-12T00:19:47Z), 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/MYHY11500322.
王芷蕾, Vol. 15: 就是一時想不起 / 若我們相愛 (修復版)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fe4b85908522e3b0caff0577f3b9ee00ef6ff7c513416ddf9e56c832f96ac3. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/MYHY11500318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a72244e08e0397ae24b4c57aba15393e3b65f6905e5f13ee4fe5b3500be2ee1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:54:25Z), 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/MYHY11601017.