2 Eivissa were a Eurodance group from Hamburg, Germany. They are known for their 1997 hit single, "Oh La La La", which landed on the charts in several countries, and peaked at number 13 in the UK Sin
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 0x234d6a89cf0e6f8e4ecd99ab89c8d8b562dec5868ccee80f14e793651655fa02. 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/d304d341-e187-49f7-a383-4c41fcbed576.json and https://artists.proofprofile.net/proofs/artist/d304d341-e187-49f7-a383-4c41fcbed576.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 0x49b20495bdc397461116028eeb22acacb09013a53ed2fcc518c906ea53a4b298. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/DEF069906070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c0b174709dd626e8b323e9431e2000736aaec880b42a184fd12346f96e8e45. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/NLML60200058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b7ffc1a2d4da14a63baa09cd6ba3e7f69ae39604ffd2785b31f2c3fd608cbb. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ES5050300629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47209c624f873e54ea8a6e5122179712bc3679bced3548426fe4e31bba3358e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:09:41Z), 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/ES5050300633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45916a5472d479e9f1e0b0effa22586bfe9780d776a2c9fcfd8753c672b09d6. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/ES03A2400027.