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 0x1bba3cc0389299a5a49539dbac99b3c0c35f46ec434140398c14046535e607c3. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/43aa2ccd-9f46-48ad-a9c0-f9b8e26d7901.json and https://artists.proofprofile.net/proofs/artist/43aa2ccd-9f46-48ad-a9c0-f9b8e26d7901.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 0xfa681ec6cabe28f0f20aaadff7decbe2be9c9efbeb2410b0f4a5c99e11325115. 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/DKABA1100810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4b4f0de83344f67006677fb176414620ec3feb15829588d0af9ee4d36bf5886. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKABA1100863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a085facc5bdb8b3127db6870da0cff22ff38fe77c5f891ea3569b1dafb9dc7e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKABA1100825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d17db5a4459b2b1c32cd424be816d24e845bba963371ef3a9fa9db99fe70e02. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DKABA1100874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24decd8be37684fd6cf8f946312a65921353310c7594641664044bfb5487d155. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKASA9803306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe561c0f5d90eaa5d92b485ccb7a04900d78fabf2cde2dbe8b964bc459dbd72b8. 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/DKASB9774002.
Bye bye (Fra det danske melodi grand prix '80) - 1998 - Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e6fc5404e105dd6eeb032ff19a94a39271fe3f18022b415aa78e42a964b4cd. 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/DKASA9774008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f27672c26c7b9edffb554650bbb2503b140a510f30bfe00820ab584115b3e8c. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKASA9810307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941b38a446e8c78c63e96c8572dac0b3c6637125b7640bf0756fcc6904156303. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/DKABA1102021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c4fc44cc329225d1f86e770d2f3cc26a24ac8275330128b0a2c722ba76eb28. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DKABA1000700.
Klø mig lidt på ryggen - 1998 Remastered Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fb4310ea11de39bc370f028b08caef26e35b148ebc026ee579b790f3311331. 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/DKABA0700673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fb4310ea11de39bc370f028b08caef26e35b148ebc026ee579b790f3311331. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/DKABA0700673.