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 0xfcb3a358ed0535e66babd4b316b9e065348a0a46e700fd20fbe8d5b47e14463e. Chain 2 (Bitcoin): anchored in block 954058 (2026-06-17T06:34:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4495f78f-fde8-4e13-b3dd-20c0e6ba0629.json and https://artists.proofprofile.net/proofs/artist/4495f78f-fde8-4e13-b3dd-20c0e6ba0629.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 0x75d18bbc5b38bda0c7c5c093692b349adecc796de6d59c5b94754c231a441205. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/ES5530600825.
Mi Mala (Mau Y Ricky , Karol G, Feat. Leslie Grace Cover Version)
Banana (Banana Conkarah Feat Shaggy Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c287834715bc388b8e333e555a6cabf47f685bfb327d41d561c21118c0a519c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QM6P42536240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7520f639cf70213ee86aaec3a930c3ffe1cb2cdc30247687e4ba0769cc2ccb50. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QM6P42536244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22969f20da9aab008275a8275302631870cf4707baadcd8d862d87a873b44b5. 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/QM6P42536247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82c4fd7c81d45de2f6053299a1423f6f41bb2140cd5a5df932e5619595fee1d. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:26:28Z), 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/QM6P42536248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c321649458fbde9e0bfaa2ea4b55e7bdc1c6d1232d4b13ac5402e20e08b2d7. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QM6P42536250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e2a9ad765b0a59be9fb4dd1e5284771b22437fe5202ed546d50872886ae641b. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T19:02:27Z), 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/QM6P42536251.