Fixkes is a Belgian band from Stabroek, near Antwerp. The band mixes acoustic pop and rap in their music. In February 2007, the band released their first official single, "Kvraagetaan". The single wa
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 0xec41fafab480aba663e5ddf26d431a6f493e1fdcfc9b79e8caac9ea1004fd874. 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/4ffddb6e-badb-40d0-b22a-75cde2759feb.json and https://artists.proofprofile.net/proofs/artist/4ffddb6e-badb-40d0-b22a-75cde2759feb.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 0xd61dddd1f2b888d3ee7da9affaa7237fc32049fb40b5528d7bd9b299127fd241. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/NLB600700111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf57aa9c8c0efa3933646f537ae8ec857275c91cf20242c68d1e4aa6f4347559. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/NLB600700112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e7bd551a62561acb5d0a2906f48b955619da730b72a531cf095facb8323ee1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLB600700114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb6d2842e4a3e13ce4647c95f31362633c8d3970eebbcf2bfbb355312d0f20ec. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/NLB600700119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27a73f06af116d9d17d92e1acba0c22a928e4e4076daecb577eef682f63a7d1. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/NLB600700120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa01e9e9db891ce8e2ab1b0689f347a42b3d5e332f44bd503bad714b56311b1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NLB600700121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbe8dad53e1ebef37c42129f4658185aa60fb822936d9cc42de1eee7581c062. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BER231400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5be8a5c58008fbc36ff32c046f2b32c6908aa7fc6ad317fa3aaee8d845d713. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/BER231400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9dc96065d64c4f0df15f491ee762893031f4ca391f4ab79c0b69f90df7b7db. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/BER231400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388daedbcac1508553acd15d3d8bdec0c97ef4afe76e1a786b26f86aca97767e. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/BER232400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809153b330206f2c735e2a1ffdfbcca2d5fc9e49b632d7561b8ec0fbc4933c0a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BER232400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ce7e2cdee49f48e3b83a9dc4966de62c28903e177724b991a82db2ab127817. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BER232400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd5d6a3582d2b414b58bdb6ec3effa8b09f3baafbc6d7e11cdcbfe0acc99110. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/BER232400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734ad125b938af85f07019190ea70ee4999837a86f3646e1a8d3eedc4bccb905. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BER232400009.