thumbnail|Elaiza presenting themselves 2014. Elaiza ()"Info," Heart of Berlin, 2013. is a German band from Berlin that represented Germany at the Eurovision Song Contest 2014 in Copenhagen, Denmark,
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 0xdf5fab6fa4397e5899833e413dd1492a1e167b3f8580150b0b233e8b672ff64f. 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/6f40fa6b-4121-415d-81b2-bef2f4ead8c8.json and https://artists.proofprofile.net/proofs/artist/6f40fa6b-4121-415d-81b2-bef2f4ead8c8.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 0xf9e409a50ad6aadc973718886770e4355e8bf5ab4ef1e707c06bea0e1c3de64e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEOS71300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e409a50ad6aadc973718886770e4355e8bf5ab4ef1e707c06bea0e1c3de64e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEOS71300138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2474998d93674d182daee65a2a9051911d73070898c4e6f9867ef42a20f95193. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:54Z), 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/DEOS71300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839177c1e36c4ba971983c280d74e0a40d36058a0acf27c3214bcf7d3155d961. 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/DEUM71403722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cf46fb0a4ce1283c5bfb3de828aae234d980ecc1954d652bbddcb5f989ea9ae. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEUM71403723.