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 0x276e0ac0191dcb67771d917defafd64700a8a0908456866f732f005c4d3974c0. Chain 2 (Bitcoin): anchored in block 953877 (2026-06-16T02:39:16Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/04d51000-46a7-4b41-8866-3e85afb69a67.json and https://artists.proofprofile.net/proofs/artist/04d51000-46a7-4b41-8866-3e85afb69a67.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Live på Hasselbacken (Live på Hasselbacken 2022)
Bellmantolkare live på Stallmästaregården (Live)
Visan om doktor bauhaus och de fyra barnen
Herr Bacchus han är en riddare båld (StU XIV n:o 11 & 66)
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 0x9d4dee0cebc9f46c7e10bf297e97313f8ddb46566df08a6f1f5c6af2f1ef2aeb. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/SE5BU2553731.
Hade jag sextusende daler (Fredmans sång n:o 14)
Uppå vattnets lugna våg (Bacchi Tempel n:o 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95d40c3d5fa2f0b6cffd40eb165bffc002a36ff506a1dbd66c21e344f2a23af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE5BU2558752.
Gutår båd' natt och dag (Fredmans epistel n:o 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d90630ab8eed0f3bdad0898063aba4ebaf6240ad90e23e9077f7fa04e6a1bf9. 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/SE5BU2558749.
Ack vad för en usel koja (Fredmans epistel n:o 34)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc8b05acb701f9d78e71aa33b0bf5093b6b334b6a5ec99692fead9f047f1ba2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5BU2558750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95d40c3d5fa2f0b6cffd40eb165bffc002a36ff506a1dbd66c21e344f2a23af. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/SE5BU2558752.
Hade jag sextusende daler (Fredmans sånger n:o 14)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ee2f4978ada37e23ab4af0bc10f57a3d70bff6661edcc73554636fa828ab88. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE5BU2558753.
Ett levnadsöde värre än döden (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd01cf9aa55f4814387d27de39cd80e6272d4e25ad21b67b7d53a84391a96e2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:18:41Z), 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/SE6SA2558431.