REDIRECT Switzerland in the Eurovision Song Contest 1985
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 0x489a21a2ffd6d33ac87160f4c12196d1d2ffc61e38d57f3ab8b3c2e798413d74. 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/f4a20bc3-619c-437c-827d-214a47fb21e7.json and https://artists.proofprofile.net/proofs/artist/f4a20bc3-619c-437c-827d-214a47fb21e7.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 0x26f3912e700e2e0c0e37c4d3af9ff3c1171c61f04ec14b922481474709cf1755. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/DEMF31200101.
Sonate op.27/2: Mondscheinsonate - 1. Adagio Sostenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d78af87eb36b3045bef3e0306c947a0ee31c89cc74d6b2f518c9ff606234c8. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:55:25Z), 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/DEMF31200103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa401b7a9f94dbdd74fb1d81ef63a67ce83f0c3f0e9aa0bc38cc3385310934e0d. 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/DEMF31200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16790b259d1f6342dbd78a4a6d2a460aff3fd6dfbc1ef9aa1a5a8cd819461098. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/DEMF31200105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41b2fca8ca4056393cc30490a675b67dec3883211e15cda5ea06c46a45e48da4. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DEMF31200106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a4b46de4d6c143ca2f384b1f2017ae42b8582c1864f1c0199b87c4c5b549bad. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEMF31200107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb974f9c698912920f7c3602a1040baa3bfea1033587733e678a7c38923f16a93. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEMF31200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7597bd4f27c0a0828f25448dd11e57c8ab811634b28fc6c1c35092e87ebaf3ae. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/DEMF31200111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52eef638ad0d54308efc39a0b8092fc32a99c2fecc20de755a8e4f1821cf7e. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T11:24:56Z), 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/DEMF31200112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5265debe1315da141854d62216b189f9e47e23aa73eab07a437cfc12d68059c. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/DEMF31200114.
When I Was Not in Myself, No One Alarmed Me