Orsa Spelmän is a folk music (Spelman) sextet from Orsa in Sweden. In 1987, the former ABBA member Benny Andersson and Orsa Spelmän began a musical partnership with the recording of the album Klinga
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 0xdda741fd1749cf49843314a708011be75ecb9b87987f32b8fbc950bd2257c858. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99ad0ae0-364f-43bd-881a-5d1182aeda2e.json and https://artists.proofprofile.net/proofs/artist/99ad0ae0-364f-43bd-881a-5d1182aeda2e.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 0xf38f43bcd57485b7128422e3be4f2a5e9a7d7b6044cc4d16f9a9340198c014e4. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SEAUA8800109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11de176125a829a0f63b9f13341fe0034de1831e567a2d45001ab19f27f4d3c6. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/SEAUA8800115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39a5d415fc3f03a9199030437da9796f0eda35a8d5a1977d46a154223273d64e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:56:49Z), 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/SEAUA9702050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60f0c29b72a6a6a16408e186c78a1204a22b800780b5a839eeb79c3880f1f887. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/SEAUA9702070.
Älskade svenska visor - Beloved Swedish Traditionals
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ccc80ed738c09c77399e106f8ead7337d25429fd732cd667016a8c014f6e90. 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/SEPEL0701706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf92774c7d1b063491713a58feccd27a6e0e6a2a55fc7d864a2dcc26024053e. 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/SEAUA9000203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7924cf902b8e7ef4be324c861544ecd2c8bf52542fdeb9eb77d8b6a9396402c. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/SEAUA9000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9819f063ff114d71bc6614992eced7846bd4ac1ea7a651f0c0f57afb37fa9f7e. 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/SEAUA9000207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bcb0de13da1d3ac119cc8ccfc1b098c6eb52018abcf28c227ca33f02ce1799. 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/SEAUA9000208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a648a21f42aab32b36f499610625640b0b78253e6abb37048b7130f157e5980. 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/SEAUA9000209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fbaf99fac6bea8510c2cfd89f05c65aee9dd83e6ad1a02c1ea0cca98c3b7f3. 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/SEAUA9000211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eae9ffeec72db022379a2f7fd9d8eee84f17513d1b9850c38f4e233c603592f. 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/SEAUA9000213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2b5bbd1b3bc3a55b232c603d2bc7ecb7d3f05aea5fe63f0b1dcd9a5b0c8524. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-21T17:24:52Z), 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/SEAUA9000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd98948bfda64924d8d3559b3655ee02e10e47824afb87f90c3bca6aa3a3da48. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SEAUA9800210.
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
Inledningsvisa / Klinga mina klockor - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd308eb2eac0e255a0a7314064807372fdd7859a1829f50b8a13ae50abbed2e3d. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SEAUA9800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09551d82f0867706bc49c9ad5f3ad5500059351cda297cc8d1269b9a110653c9. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/SEAUA9000202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84511a0be027780919b0f7e63a7e660f5ed52b5d60e1981b941253805829353e. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SEAUA9000212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b37e02d99117f527d394bd43143e0a8172584c90a53dd8d88fc8ed08f7db7e2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SEAUA9000216.