Paletten is Sweden's oldest and longest-running art magazine, now in its eighth decade of continuous production. It is published quarterly, primarily in Swedish but with a few articles in English, by
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 0x38bf3b9426647838d5b605c4bac148a2df505bfda96298303e23470a5f20ed63. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f0308f6-fbea-4d52-9309-45fb8ff80a07.json and https://artists.proofprofile.net/proofs/artist/3f0308f6-fbea-4d52-9309-45fb8ff80a07.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 0xfd535729b866fcc659d0d06d51b5923aeba81cbb944cc9843c0a6722fe0c165e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZWFM2437641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9959d7c062370dca124e84b534a3fbbccc5a0b65abc4f2bb6f800b18f4891e. 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/USA2P2422100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f5977adb52c0cea8f41e4f19683e9bfdd8b65e8720e1e6a2a1cb004778d12b6. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:24:47Z), 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/USA2P2419966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67dbf43878fbeb649382f1330c639bc71133f7acbdc9348266708970a6652a10. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USA2P2419967.
Guess Who's Back (HELLTRAIN 2024) [Dønski DnB Vol.2]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97caf21c36a44926cf33b6604a74ac36a4591b2b7bd4a50c2d56e8ba7b7808bf. 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/QZK6M2408875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9233efd0f6a15d4ba6f5ef5c9d6e1b139b93c0acfb865b788b20697ac06add14. 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/QZTAZ2393229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd119f55194c5ca21c34c79740ddca22570c76dffeffdc95f3a3ae71768ade852. 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/QZTAZ2393234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb613fe505801af7d064b5818956b396a356e5576a5b3eb18db57ced14122b6. 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/QMFME2413933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505e713acfe49419d9864aba8df421e87d0e384585b3b520114f08a48105ab93. 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/NOWZ32300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6206755123f2d1cff8d4c5b003acad60b49ddd11ed1f8fe932f30d2f5cc09476. 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/QZK6N2474080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c26a33355ad6bcea5dabf94a60de92b0a99b5b129dac1e8d12291ac987efe3. 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/QZK6N2474081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf075eb92d107bcc2882fbc1adae5a933d48c69ac5976c2917f17d9677c31dd7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:57:30Z), 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/QZK6N2474082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x265c5892f73e96b295f6be4e462626aeb255d8f3e4909fc1dbd81449733f1770. 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/NOX8G2500022.