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 0x0059f98c77eff3d86e9a087a7d185b48536218328f34d1be24407510d6ff0f64. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e93f07ce-cf24-49b4-a222-31c440f70282.json and https://artists.proofprofile.net/proofs/artist/e93f07ce-cf24-49b4-a222-31c440f70282.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 0x9f5bfd7876c9fa09d1d89986c15247fc0d753a5723f977dd8a5a8ea49defc579. 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/SEBAA1400601.
Djefvulsdansen (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9b9afd4ba72a780e0584c2db93ca23ccb0a9940dae8234f54d5c181d7bae9d. 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/SEBAA1400602.
March i sang (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8296a6ca50a37f4ef82891d312bd7e1fd2a7ab84c5dc61f15e9013330e9c987a. 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/SEBAA1400603.
Polka (arr. K.J. Ankarblom for violin and piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcae40da64a4b772176e19ebc9f9f38fb69119b4ec49122c1421f9903b3cc43d9. 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/SEBAA1400604.
Vals: Vals: Stortut (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7af49a94e8f1b9103da964babb35aee2155f0f519bc61219f2f56ca031db3a9. 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/SEBAA1400605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b1773c782241fc9df1071d2ad736a76b7c24519b965c47056d66b040aa99c5. 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/SEBAA1400606.
Slängpolska: Slangpolska: Jerker (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a3b2a439731e583298fac9447a5983fe24c493d9a38275af47dd10fea111fb. 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/SEBAA1400607.
Ringar pa vattnet (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3e22a443c3024c699ca9b9aff53217725f26cdb49f42bd2bd49899a924b0ee. 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/SEBAA1400608.
Bullaremarschen (Bridal March) (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf7c2f9bc9336bb1dd5cc261f6a65de0e44bbb3e1d1149c7fac7438c3dda3f59. 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/SEBAA1400609.
Bertil and Eiwor (Bridal Polska) (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970a6f1c15ab24b017bf936d1868c8cbe475c2e5b134b37c1aca7dff557fdb31. 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/SEBAA1400610.
Knuss-olles livsstycke (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5df0f7d56380580d859907cd4576e4731c59a955aeb6e1cbc3e8337dd57b5bbe. 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/SEBAA1400611.
Min levnads afton (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96b6d20a5cebe514f7fcd4b8525f40dc30885dc6ab401195db4c79db670ad24. 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/SEBAA1400612.
Tarar (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878a64d5d8aedb1a6540235c2483979f2df0648c606772a5232cfca7c8bf5185. 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/SEBAA1400613.
Pontus (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d6d76991d6594f6271fc97f8c752c12d54b58fe88d30ba2a2235250504fbf2. 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/SEBAA1400614.
Mitt i juli (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809426a049f23b426e8488b7764af933e9b8bfad530646af3566e579327f95df. 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/SEBAA1400615.
Brannvinspolska (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3023a29162d7d78ca88f709ff7dd2a7cdf018da0c29581c648f70bcb01512d70. 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/SEBAA1400616.
March (arr. K.J. Ankarblom for violin and orchestra)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e635405856d1e784bde6d060db5b290e2870db2dea925a37aec4459aa93fa3e. 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/SEBAA1400617.