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 0x74e417e80131e2f045c382498916fc61896f32e17515ae5f79ed8a2fbfbb4eaf. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e49a397f-4b9a-41c5-be37-7588262a013d.json and https://artists.proofprofile.net/proofs/artist/e49a397f-4b9a-41c5-be37-7588262a013d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Koane halben Sachen / Die Liebe meines Lebens
Iatz spiel ma schneidig auf / Sehnsucht nach der Hoamat / So a Diandl wie du
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 0x5757cc16d7b85a3ebc09dc4117306b88bc9fce49b098871678ec6e35173cdc58. 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/ATT251908450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ce79d8e57cc5854a9e87f9e55dbf557b8fc302aca9e49249b4612458611332e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ATT252001170.
Wenn a Musig spielt bei uns an Zillertal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab995fc7f3d9d3913290362266b11bd56d628867b85325f1db34ba5076b7b46. 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/ATT252300860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eee8220bbad740b3058e71502068c269375be6249249d7b9d9b0e5e9f678ee3. 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/ATT252300870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2946445d6e1e9e1a75a5de0acf44badc325cef9f895b2911e94febf20d9fa33. 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/ATT252300890.
Was a echta Zillertaler is / Da drinn im Zillertal / Auch Engel brauchen Liebe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf103b7b3d767cc686459f54a47d136c5550ba3f910cc7e4ea431ecfee8625af. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ATT252411990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0fc816235cfe9b5d8b43bae85f8c426016619f37b74900d4ab55dd07e5352c. 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/ATT252412000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25939bcef5cc6bd702d90f36eda77a9c9e45569bfb43ccb8c65fe76eb9bbffdf. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ATT252502180.