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 0x5b6dd4084701d76148e6fb15510575298ad55c406111306bfd11a92758629364. 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/e1627ac7-f5ca-4b69-b5eb-5809d28546b8.json and https://artists.proofprofile.net/proofs/artist/e1627ac7-f5ca-4b69-b5eb-5809d28546b8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sdorica -Mirage- (Original Motion Picture Soundtrack)
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 0x27f36f8a9225628f6d40e865d4705570ac7df5b4efa7f60412ad259167b53247. 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/TCAFN2119852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x708eed948cf3dae4016c936302fbbd687669faa70a9c6560434960981f5cac9e. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/TCAFN2119853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287ce7108061c88396a62e9e7638c8b375e0b363ce57378ad42e705abb8c241. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAFN2119854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9175671420d4a24281db57e4388fe47498f0fbdb991c75c1c0c3e83a02b6a099. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/TCAFN2119855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587188b1008543c2de99312fe852047ee6e7e51192f0ce97551ff3479ce77bb3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/TCAFN2119856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ac2fe9c8e0cbf87d36ed2c99708d2c476b18a37fefc986fd32dd97850731408. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/TCAFN2119858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617e5613d7380602dea474f22b7181cc712d92d834b9ae90f368dc390be389ea. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/TCAFN2119859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e53339432f632be95407e593389673c4a170f4e7b97cda2696e9f2f4ef9fcc. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAFN2119869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8ebc2f6f6f0db9eef49538fcbf13806bac57035a1eb41003a949b029dc1998. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/TCAFN2119871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05d9b46bb9c006c80bf7980dc8ddd8a3682914f1b4db6e21bc1cab1b415df140. 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/TCAFN2119875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1257e191a54905837b8b06ded8148870342c0007049241babeb99a1329888a8d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAFN2119882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e91d0a7f93219d70b49b018b3f1dd6e87f0d16f68a2c758fbce7b657b1c5c2b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/TCAFN2119883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5927ac0d1c56b1ffd9ae8aa6ace8c20910cc6b566c37ac848070bf97d284048. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFN2119886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327a29dfaa5c6f02587186819dccbb7352fbb74db14dabcdc1d5513949687f86. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/TCAFN2119887.
Deemo II-Symphony of Life (Original Soundtrack)