thumb|right|220px|Olivia Lobato Olivia Lobato Svensson (born 19 February 2004) is a Swedish singer. Her song "Syrener" reached third place at Sverigetopplistan in 2022. In 2023, Lobato participated i
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 0xbd2d886e7ade94e253b4f4352a49622f3dd941b29d42870e515be12f3c7391cb. 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/789250a7-e9b9-4474-a1f4-2bd63bb6c4d0.json and https://artists.proofprofile.net/proofs/artist/789250a7-e9b9-4474-a1f4-2bd63bb6c4d0.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 0x7a1eb06bc90a8b460fee0854c263223d1088e51d117810b6ab97e41958457184. 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/SEUM72400073.
Vi igen - Bella Boo Remix - Extended Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c86d7d2515ae31eebf9ee8d9c04a7e487835478256fa6d0f29ccd190ae59f09. 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/SEUM72300149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7b98d640a7b6422d2e61e4d800f2610b7c9beb2da127943a7258a7402448e6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/SEUM72200968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2b8c9ab70bfbf117145f1d9569313adaf275af78b8445620459abeb0cbdcc8. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/SEUM72300486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c17cd45e3c658dbb3d830b942b9d377395252c52a2259636d4e5e6416505c0. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SEUM72201068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a595e5e1d8768f497b5f9a2149ed159f3be29e416d48b457d39a4e47de0cf8. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEUM72100482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd5d137dee38b7a271c3a66cb0a05d02daed4f620e7d4d9599c84442d4dac13. 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/SEUM72300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fd5d137dee38b7a271c3a66cb0a05d02daed4f620e7d4d9599c84442d4dac13. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEUM72300998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d82adf021ff5068e58983ec7c9d578923ca62130096055b6c2d7c1141ad01. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/SEUM72300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2b8c9ab70bfbf117145f1d9569313adaf275af78b8445620459abeb0cbdcc8. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/SEUM72300486.