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 0xe3e67994932cb07ddaff4a87a2e7e1df24b8c82fff40e2227fee1a4dd3c378a9. 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/9b8b87bc-f0fa-4ffe-afb6-a20d6207b6c1.json and https://artists.proofprofile.net/proofs/artist/9b8b87bc-f0fa-4ffe-afb6-a20d6207b6c1.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 0xe597fdf93ca290dc9d8d5284e2f811607bd2aea0ff63f819adb37418d8d9123e. 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/KRMIM2117053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa34f27fdb0a9d3f2fdbf9bafc2faa2c5d6059ed1b1c5509860bd88b2f3b3e74. 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/KSA012135733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5662a5b71fbc22e4b8a8604b384422ae022e51f8304a85b6ef8f9b7ced3972b2. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/KRB472202481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217ddc7fbab45acdf35bf84fdac33cb03ef72823b3ea4e324f98064ffc9211b1. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/KSA012243738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd336621fbd0cfd68ce273bb36060947c999f3eb52ac7ca2ada1dfa5ef82e7068. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/KSA012246883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38884d7550acfd61a902673bfea8816188662e26733086b8930977f26e9fa316. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/ZZA0P2309266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71d1e75aacfd63a46974afb812ce2cbaa4cb0e6650e1be891f2eb7705218d40. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ZZA0P2313289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717dbd8c26e31106d1481266462d6ff8a2072cdbc3eb2b467e530725f2bfaaa0. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/KSA012311520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe64d27c61c65661f5281908b4b6281cf18a91b4cf751381b5c7b857388332582. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ZZA0P2404182.
Love Interference 2024 (Original Soundtrack), Pt.13
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf129dbf63163cba84c5e9f65b0eadc4826de350e5bdcd9d85b5bbcc5751b3f2a. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/KRMIM2440224.
DNA Lover (Original Television Soundtrack) Pt. 8
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeba73a81ddbfb8b04d005786782dbb549ac97dc7de8997e849404e15c3031fc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/KSA012353447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b91b7c579d568baccbdb70cd37d2fecf7c1a79053b32153078ab9857b855c00. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/KRMIM2481855.
The Scandal of Chun Hwa (TVING Original Soundtrack), Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1a2de0456d936b24f1bb16dee5504e9e675796ce6e032a4cf25a8964021c1d. 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/KRE892100075.