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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35b82803fecc1ccbbef95de4be195b797fb9e3d1b9cedcb5846d0503c4bf6ed. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/837b1be6-7175-4650-b1ee-c84e5bdad61b.json and https://artists.proofprofile.net/proofs/artist/837b1be6-7175-4650-b1ee-c84e5bdad61b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Præsident for En Dag (feat. Anja Nissen)
Rock & Toiletruller (feat. Silja Okking)
Dobbelt Så Gammel (feat. Frederik Hansen)
Alle Ting Har Fart På (feat. Emil Oscar Ekelund)
Fjender 4-ever (feat. Asta Mellson Vind & Ida Louise Lundvig)
Disko På Mit Hoved (feat. Søren Mikkelsen)
Jeg Vil Være Pirat (feat. Frederik Hansen)
En Rød Med Brød (feat. Frida Brygmann & Søren Mikkelsen)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73e98b70b671d784cc20b07f71311aabd8f0c27a5e0362d037f2a28fee919c76. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DKCA41600218.
Blah blah blah (feat. Silja Okking & Simon Stenspil)
Åndsvage bogstaver (feat. Frederik Hansen)
Sommerhus (feat. Mads Koefoed & Søren Mikkelsen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dde4e25b6ddb13191abecf39a3d8c1081134c9daa44243d9a4ab3ed43124730. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DKCA41700509.
Hvornår Er Vi Fremme (feat. Frederik Hansen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74853d3dcd10af53fe9be9160275cef451f0c23189ea351c991f68fe9eac0b69. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QMBZ91934831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad91d03ba25534a355fd7516d5bf3c582d659e91bd76f2612166b03dc7f1a62f. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/QMBZ91970380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc878d2bdf2029d5ca7680b764e454edf4afd998716ead4e1def2ba880159eb37. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QMDA62135397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0ad012fa2f1f6797b2d61a908e4e8e18506c8a949088ac8b736b13fe6278d6. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QMDA62135375.