Mats Bergmans is a dansband from Nyköping, Sweden, established in 1973 as Sjösa kustband, before a naming dispute made them change name to Sjösagrabbarna. The band became a full-time band in 1981and c
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 0x39e9fcb7c9885754412e86e865d67629972018b98efe932f7c70de83588bb033. 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/f1631fd2-51af-4ef2-9234-e000622a9cdc.json and https://artists.proofprofile.net/proofs/artist/f1631fd2-51af-4ef2-9234-e000622a9cdc.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 0x176b4b2cf1e90edb95e725002049b8a5f60177f60d430349349ebca8f52f27f9. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/SEVHR9700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b1ac8ca8f941e6a29292d9c06c0b1c2cdc047f14bfabe3fc9cf8ae0b32545a6. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/SEPQM0610143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364fae0dfaf40b771da97e32700b9dd12e0e2bffa78f1c161bf2ffc5bae4f7e4. 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/SEPQM0610145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03b23ff54db814188c61338ff8b401c0854b11c80fa7301fd5d2d31da77d9ea. 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/SEPQM0610146.
Att skiljas är att dö lite grann (Crying Time)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38c45e7bcb5533d1fd125353b93fea0e9a7bd691112f7685a0f696b5a1f5476. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SEPQM0610147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7bc9af8edd1976a43db39195b8f336c31ade76464c3083f6ea612a4eb968a8. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/SEPQM0610268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffc0466cd817ac5c9eb3d50bffd1fa2393425764c6a639d23bba7033e3d022e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/SEPQM0610275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687e3f7dacea8ef843e95eba5be1b94990d2f67747abd26f37067d205bf49bfe. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SEPQM0610279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a20b2109cee1310d50b1190c14784e0640788bda0bcfd9d47feb93ddf3e3aad. 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/SEPQM0717700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5562aa5cf057d47dcefbeb843eff2ca6010ddb37a35758283fa32367d73d6f02. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T21:23:21Z), 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/SEPQX0710003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17264b3712353c9fb0a4e2ee6c7ac0a33862d2606755f5ac3508ba79cdd436f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/SEPQM0717701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6f3fb2047107eaef411e49642e3a669e4b773542fcffa45d65eca9929e79e1. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/SEPQX0710005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d7a8c87aeca76c1e08d0992285d60667ce5635a3159536d7c5a4dc99e4a077. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/SEPQX0710015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90e0edf262023cb0566ec796d2ea8d7ed00f286c34a1abdd2891a52fb408635. 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/SEPQM0900215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe517be57b46b798aeff083e2926cbcda25739915cba6b88bf66931f9cd9b47. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEPQM0900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29337b30ce9a1ddc00c747a14324d7a47f305f7bf653627051025aeff219836c. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/SEPQM0900218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24255cd4ef5bb50134a6fbcbbb8b5bacec79b95b028838cbabd98f878c5c5c80. 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/SEPQM0900224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdef7a84f2df1bafe0188fdaa0fdb4d768b6d2b79649b451525123b2b79f4f9f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/SEPQM0900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355ad86ebdfed3ff107158bfa565a666460ea6e477bd686bdcc8e4b9a97e29f0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SEAMA1300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543a9698f3f5578206745591135e1c2ad4cb775c393f2c07e2f4d68f1ec03d48. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/SEAMA1300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7870254922cc451bf47d968f82ca10ffce687d2529ef0e3321ea3db525e2af3c. 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/SEPQM0610141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853570bfbf843f0137e679413abd7ef3199ea588fe91014f5d0e96e6ceb26835. 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/SEPQM0610137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe04fbb19c9b9276bc6418dc9ef9dc45b7e1a8fc2da485fbc911a6a687d2dd. 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/SEPQM0610134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acb2ed1fb790b759ecf87bce5fcf6a912bf655f39b7a4fd9cc42bd4544d7798. 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/SEPQM0614838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9454a1ca59352d563205748a04b30696049317ccbd9ca7a1efa65e610c8a93ba. 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/SEPQM0610266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5d5f4c3248a3f198e3f19aba1f1b2352c7923125450195b0e630e692e3ecb6. 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/SEPQM0610278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84d25e776933ef7d95428778737b37ffd016e0234a085f2be117560b385cc48f. 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/SEPQM0610267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7bc9af8edd1976a43db39195b8f336c31ade76464c3083f6ea612a4eb968a8. 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/SEPQM0610268.
Sveriges Bästa Dansband - Berts Favoriter Vol. 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77b635a313ba90e539b216ac602590424b898d4565066b8ced663e6cd19a2ea8. 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/SEPQM0610135.
Sveriges Bästa Dansband - Berts Favoriter Vol. 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9454a1ca59352d563205748a04b30696049317ccbd9ca7a1efa65e610c8a93ba. 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/SEPQM0610266.
Sveriges Bästa Dansband - Berts Favoriter Vol. 1
Sveriges Bästa Dansband - Berts Favoriter Vol. 6
I Afton Dans 11 (New correct tracklist/audio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdef7a84f2df1bafe0188fdaa0fdb4d768b6d2b79649b451525123b2b79f4f9f. 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/SEPQM0900226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe517be57b46b798aeff083e2926cbcda25739915cba6b88bf66931f9cd9b47. 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/SEPQM0900216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca75b271c9996bcf14f852ba5989f1c2d4b691ebd6c5e82112dbd9192ed9e6e. 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/SEPQM0613653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a35233ea55b8fdb8c2b2906776d4d87da3c6bc047251ec650bde8111f9dc78. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/SEVHR2500603.