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 0x8f4ab6bb6904faafa5972be2e591a62cd3fe7c2b37ba6fbfa4131d6bcad0d57f. 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/d5b6082d-9e5f-4c20-97ac-15fa78f0845a.json and https://artists.proofprofile.net/proofs/artist/d5b6082d-9e5f-4c20-97ac-15fa78f0845a.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 0x292876bd4520133aa7857382e1e0117b3e713f9367b7aa2352825ede71b97585. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/HUA631200560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5e96c08c7492cd90e271a510925d5bdfd1f5f9dfef56c1294a0a4906f8b5ca. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/HUA631400368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb34aef457e271d511322704fc2bf5ed8dac60836f9d18c66b8c02b1bbc347b0f. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/HUA631400375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c83db55146c30d309438e3ea4c1af59d4cc69dc08f83dc54a0918e32bab9022. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/HUA631700338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16b9177655f648ac088ee7cd528dabc2f67716df717fa932b008b8c01ca9332. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:17:18Z), 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/HUA631800280.
Vikidál 70 / Zeffer 60 / Mobilmánia 10 - III. (Live)
Vikidál 70 / Zeffer 60 / Mobilmánia 10 - I. (Live)
Vikidál 70 / Zeffer 60 / Mobilmánia 10 - II. (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e5694ad1a232053d3279e697a299d6085b292980f0a09ba655f3166faf1fc2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA632000608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b5ef30fa68520c7ca7bb3acfcc445364055eb19ba27df914e207950d501d6. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA632000609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f66215064eb0733ce89ba6fd24783d003f70406d7c77d5657520a947be3c1f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/HUA632000612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a07733e746d4dea68c733bfeba250877a95272c477d91528cae5c259c9dc49. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA632000619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8aa27e8df3639e786745af82c3e1fe6b46e08910b68f465bf17f1df3624b5c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/HUA632000640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65cec52315f893893ea22d5a0b84634d9c2672741b129703f7844fb8e739aa5. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:01:06Z), 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/HUA632000622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0d81406d65cbc971bc2db0d796ef2f14ac0a2d578aa3d11f5feddeb6dc6d9b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/HUA632400484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecbaa935a26f49c456f147a5bd61bce46b031f973a5fb6def45103ac862e87a7. 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/HUA632400485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bcfe37148f2684e689d82e219c2c92501e50981d65c16dab3f7164f8427eca. 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/HUA632400486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29112c04d2635e3f5792a982fb6f73d28ac2bb1b84d7ef0e01a7195d8e6fa6c2. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:56:28Z), 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/HUA632400487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead0f681988fbe6b982ba0c94bf854560d063fb2f972eb0ea571d71af944a1a2. 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/HUA632400492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e12a21779c1aa67ede5dcd1ef69bb1b8046f8236dfcb31e4ab981821b2050a. Chain 2 (Bitcoin): anchored in block 958971 (2026-07-21T05:04:56Z), 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/HUA632400496.