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 0x80d5e6ad91b0851de16af3d3239fdb6cd3cee08227d288821eb74fca07c8fd4d. 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/50813fae-7ed8-446a-8f43-031af8ae9f12.json and https://artists.proofprofile.net/proofs/artist/50813fae-7ed8-446a-8f43-031af8ae9f12.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 0xf2ccdd3a3a3cfdea205fa81b85eaca8aa2b645eb35481af39ec0c4eaa2f672a5. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/TCADO1842102.
Flamas Crew (feat. KRIDE W, Ole & Kapteeni)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c1e8d7d2ef3c04d2d52be77958e41f9804dba4980d28142e892d9bdbf9f1d31. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FIK2Q2000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c2165ebd5aa112080eb549b3f48a7483aa2aa4f66b8e1eb577434fd3ae181c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/FIK2Q2000028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4e17101b3aa8be31105d256ad6bc9cb0dbf2d8b2ffe1654f5b59d5e839d5442. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/QZES72374241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8974c91e771d0d69fc3d5bf19bee665489f36d50e6b8e52583028a7fba130f29. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QZTB62447591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d989828c43bef00e9d4113d70391a90e8191f80f6a810d9337606d4fc0fb07. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/QZWFQ2447967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1300b9b91f541511eec8e290d0bfe540e03f4fb5846223a2e937f9b108f6d8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZZ7L2470390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f957892e170504db88b0425d6561d56b0ae995086ecb8cc8313b4bb0a95953d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZFYZ2577072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e835b18adb04612d8a222053a8a4cd40d2218761bde3609d8f2f2486e9d4ad. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZMEN2518223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b64e055c216ebe1b4240ca31c39f9892942ec3e7c656f9d13ee5b4ae93ec9f. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/QZMEN2518224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2666967587eb04a82d253091ac6e730d060760251490029d8c9b98a06222916. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZMEN2518225.