Mats Paulson (born Maths Paul Ingemar Paulsson; 28 January 1938 – 19 September 2021) was a Swedish singer, poet, songwriter, and painter.Nationalencyklopedin biographical entry about Mats Paulsson He
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 0x2906b4ab62e222f307546833eef545747885e5fa37ad9da147ba75a39d11f390. 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/aca805ce-66ef-4c8a-97bf-0c4dbf564934.json and https://artists.proofprofile.net/proofs/artist/aca805ce-66ef-4c8a-97bf-0c4dbf564934.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Bach-Humbug: Classical Music for Christmas
Vårfavoriter - Sånger om våren och kärleken
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 0xfbfc13d1e9df6dd9d594b17f1e996dbc19f18a54222d5c15422d4c213e374865. 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/HKI190567111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22af0370588c508daf1e6389372c464884f67d682ab676032f46ed46ef0080db. 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/SEPQM0612411.
Sommar sommar - gröna ängar & böljor blå
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99ee9dd285279ff8d155a3f0ff8e213406193b3babef4c193c41678b37dc0f7. 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/SEPQM1300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013760f140064b3d8f390a7fd1416df5d1134797e85603f93e9562993c98d6fa. 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/HKI190567103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06758215c8e5424ddf1beabcca2a1e8b4877224aa400f4f42ddd7ceacbb71931. 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/HKI190567101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aac0fdeda5781c169d93cfd5f09c6cfd83682d6e504b2005486a3c71fd2b34b. 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/SEPQM1300105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2110dc67115f256f849bc95fcfb05f4a01142ac4e6568eba281045501fddac83. 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/HKI190567107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf226690af1eccdd7c92f684812b5e9ae25304de59805ec2d8abd8b3774cd2d05. 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/HKI190567102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fc065ef1df14f93bf8e050a41113a6d4b37e126addadf5de1f67769ad2e5f6e. 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/HKI190567108.