thumb|Anna of the North performing at Parkteatret Scene in Oslo in 2019 Anna of the North (born 8 June 1989) is the solo project of Anna Lotterud, an Oslo-based Norwegian singer-songwriter from Gjøvi
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 0x698889b404facc36f81fbec7e77f68bb1f37cd988e636d9a1c80ebba897bf443. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7ff036e-dd78-49ff-aea5-50f3ec0cec05.json and https://artists.proofprofile.net/proofs/artist/f7ff036e-dd78-49ff-aea5-50f3ec0cec05.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a640f5c13efb86f0c74f9c71c362a39441a0ec55e722165655159e6ef9914a7. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GBENL2203298.
Boredom (feat. Rex Orange County & Anna of the North)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9009562af28650346520c9a6ac126c7a66c0dacc63380ad944fabd697a039a1e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USQX91701279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7e49e40d38f1f15f85eed0ded78d548aa67cecddd36c9bf57a75c36aa78933. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USRC11702914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf2ecb6af2252dd91d4bfac753e943d6b24decc6ba695821afd71db04f9272f. 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/USLGZ1600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b7b4d381101a31e27d0abf7c4ebfc7483feaca4371cd201fd8392114c17ee9d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM6MZ2337469.
To All The Boys: Always and Forever (Music From The Netflix Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5461e45479df7b9bcb1149620c4647e1a998d38076314d9e9d9a6df9ce2eb5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMCE31902422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb7b8de15af13b5decdf79012a07332559f29c214907a5ee8b59790df879f41. 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/USA2P2138786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb7b8de15af13b5decdf79012a07332559f29c214907a5ee8b59790df879f41. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2138786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7467193eca4e5f1a50cc0184d61c4af8bb51ddd7044211f42af9ab5f871b168d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2225199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe26ef01acb07b9bfd0cb68a04ceadb8cdd701e55fc20288f5bb87c808d1533c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBENL1601747.