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 0x1ccf442ae856f1a1a53219464f2341b836db46911d44ab8514113e6c89d5eff9. Chain 2 (Bitcoin): anchored in block 953588 (2026-06-14T04:52:46Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/01fbe928-dbd3-4f0b-85da-f7eabeca3bb4.json and https://artists.proofprofile.net/proofs/artist/01fbe928-dbd3-4f0b-85da-f7eabeca3bb4.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 0x02a92d772c449b4c599c485a05e35d59796e6e3f9ce0df2e5d30216b2fa05455. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TWA531398017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244b00d1c588dce27fec0df0b2bbe68e4dc6390f968b791690a12c9bcebdb9fb. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/TWB430002131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d29f0c74567337f0e2fb3a4cc1192f8692e65a7cb308cbbba17c8082c87964. 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/TWC150001002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fde4453cbd8fc94905392775cc8d8c1bb9012533f446fb8cb9e4a8cce5bd28. 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/TWA238500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c114f4dbc31f2ffaf6bd0837e47cf5bbb66d5efefcabce9d8debda0a2ef5695. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SGA170400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa200a2e1b2858476a15a8c6a539ccd6ec2d5c298a42c2899dcc544a4ebeb162b. 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/TWAN71880093.
明天過後 幸福以前 記得用力愛自己
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eca043624ebd00e25f5ef587832f13096ba4fa1a9b03e39e51290f03389fb2b. 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/TWC610504901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50c6941677465e4cff7cbae8a61ffcdc77b3de91999699f3f9ebf85dc54cfe7b. 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/TWC610504902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cfc84c4109a2e448f1dc8e6be4b2bc8d8187d75bb1cd73d4fa2a59c567f9a4c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TWC610504910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8c3040ed044dae407b4a4b2bc033cab5be365b43dc3e8ba718f67bf6b8998fe. 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/FRX202056751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b68b70884f6f871f4ed09b2926a501f342e1147a069b27d35a095435abe1b37. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TWA531400542.