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 0xd43741e78d14f5075426f9ed92fe16a86ddfec750ca34f4518a55cdd8612582e. 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/2db8b894-1afc-4880-bbd6-33ecd7f62622.json and https://artists.proofprofile.net/proofs/artist/2db8b894-1afc-4880-bbd6-33ecd7f62622.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 0x5de64eec567880cc3d6a38d91c425f1d71bdadc33a3aadaa69fc28c8e7ede19e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TCAGQ2235812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc388ae2b5bc954583a4cffbaad31e37abaade31c5145800d0b97f01bd8d3ed. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/FRX281941590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeae5d5dfb253817352e16ce7c8a4a505f2d914287b8ff8b9397e4ba89fda67d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:59Z), 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/FRX281963259.
Whatspapin (Remix) [feat. Kosso, Killer Kamal, Cedje & Lange Ritch]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x006d60be9d7b013311bec20a9fc4f8aad3f00c07aa70e3389d55f91588233c37. 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/TCACU1656290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de64eec567880cc3d6a38d91c425f1d71bdadc33a3aadaa69fc28c8e7ede19e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCAGQ2235812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8acff53a69da86afb1235d3dd58c7f9ae645e6224278bd9e8f534a047e71bb5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0M2368021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c679c6f9667aacc0044466fb65fef2be8ba4cf2c96c873f5aa6164b63d262b. 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/TCADI1701522.