Sonja Lumme (born 6 October 1961, in Kristinestad) is a singer in Finland who represented her country in the Eurovision Song Contest 1985 in which she sang Eläköön elämä. She got 58 points and came 9t
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 0xf810c24b759f7c3b76f46e796ff458db917ac0ba18bcf0e72566c01ab49082a6. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f7e4413b-1f4f-400e-a9e6-c8ca6c7d5e41.json and https://artists.proofprofile.net/proofs/artist/f7e4413b-1f4f-400e-a9e6-c8ca6c7d5e41.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Päivä Ja Yö : Kootut Levytykset 1983-1985
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 0xe46a6c7b0fb435ce0ab5d405df314c4641aa0eced9e9ef2ee6a2f8347df6df38. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:34:06Z), 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/FINMC0700003.