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 0x0c173a3a6fd6abf928b005c70648a2bfe4ebc71ded40a8d7c3c3d2dc23301b97. 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/4d67fe9f-e549-462c-a7d1-989fe4d076fc.json and https://artists.proofprofile.net/proofs/artist/4d67fe9f-e549-462c-a7d1-989fe4d076fc.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 0x0a3555d4ec4dc9635725e3bcad9c16ecaae21968e22a5e70525125f69b81f507. 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/US83Z2351027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea461eef6ead4ed6123aa094b70c5908cf432519f87761c8779f4a73fef3f06d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z2121059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed8dfc3bc5a9361b69b1f52b998c374443c7a1241ddd1123648ebbeb522ae8a7. 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/US83Z2121060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7b3310a66b9044792ae2fde29a2d72b56e96bbf78923058119b48922f899bb. 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/US83Z2121071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0bb17b77243968dd4a41a33ae27022a363e053add81137c6ab4673852e0bd2. 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/USA2P2462531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b0106a8c4eb2815445cd10688af3dfb82c031e713be986854fe3ae4119c0b8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z2405588.
Chana (Rialians on Earth & Billy Esteban Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec8ec6b180ba7a81d5104cb49db951d6eff768981850f4e1ff84a5ab3e7ed59. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z2402615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ae3387af1040a392f9c16345312888e176123d02b529ba7a2972bc451092e6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USA2P2446573.
Dejgidi (Billy Esteban & Rialians on Earth Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19cf1d82781bc422609535bfb1531edb625bf906ea69f7a61e78cc62d756f652. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US83Z2477998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb214b8e2a43419cdee61befdde1157046d2194cbc5547c2b5195e382b1d6e. 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/USA2P2417515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46343b604982e6be7ded8db56c2fb139c8a79fef334ce30a746c6f334b68a347. 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/USA2P2363461.
Fana (Billy Esteban, Rialians on Earth Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ebd4941ec9052b0cce8db9278d19660326a31ce25882b9a4aa06fa5b55bab3. 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/US83Z2346892.
Istibanja (Radio Edit) (Don Jongle Remix)
Stars, Clouds, Moon (Rialians on Earth Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d23f7085380f9684a4a7e347f86b57fed762d5e18e4ba81bad88b2a1f896896. 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/FRX452300060.