Karpe (previously known as Karpe Diem between 2000 and 2018) is a Norwegian rap group from Oslo, consisting of Magdi Omar Ytreeide Abdelmaguid (b. 1984) and Chirag Rashmikant Patel (b. 1984). Biogra
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 0x2b8dc2a645525352b6d85349dd08d7f1d441a9e3ff6ee2be1c2f48685e36baf7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e578fbcc-cb57-4bdd-ae01-f899981c6a59.json and https://artists.proofprofile.net/proofs/artist/e578fbcc-cb57-4bdd-ae01-f899981c6a59.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 0xf6d1393bfe4400679f855a999ce290b8c296629b14d32af75d3517b8bf554a09. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX1906043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3ea9c5845760493d673a606dcfb9e779f2a7865bc2770b7632bb7640703f91e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOMLN1901020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7efefc982cbfad02c7346f37c9d2a7dc4ae6a0b30f11dd2e8594e41b66f4af0. 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/NOBLV0602090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d5c3358285d8f81c759266b13792d8f926fedc64d8c64de5e43dbaa2a1bc3d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOXPR2200023.
Piya Piya Calling (feat. The Quick Style)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f5739111f9a5943c1439a96992941584048a6556cf2eccf72c1bebcfbfb1cc. 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/US38Y2411368.
Dowain Narnia - Live from Elysee Montmartre, Paris
DIASPORA DREAMS (THE QUICK STYLE SELECTION)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x997f95bad686b37f3f10f26a41f33adf5e99a3d782f6b58e45b94599afaa9ea4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42300400.
VISIT NORWAY - Live from Sala la Paqui But, Madrid
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4a8f0ee38e73462accf86d311eb7bdf31edc1ae5e6d2f75b4bab3c4588ffa5e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42327402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18da74d8bcdbabb1619778498fae248eafdfddc43fea92a74c27374357a06933. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42315801.
Salmon/Laks - Live from Melkweg, Amsterdam
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dfbb648876a0b83fb7dbc6112febf3f8ed0d8e4ed0857a7ef40e0cb3f70f15. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42315782.
PAF.NO - Live from O2 Forum Kentish Town, London
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09dd3467673d65e68a14cca9d45df3d513c93e25c74a0e0041723ed6d325252f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6P42315785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb8ef0a29de0460493dfa7eebb9b1d5fcce28cd170e2e19fac8744fed0a45ff6. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOMLN1801010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e920cee810501cc5eb0ef5ec5d7f18f02527951cdffffb6b440f61a321bdc4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/NOMLN1801020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x161a7810862df21ffab189f99d9902312c9f56c4de1afbf6c7f73c921edfcf5b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOMLN1801030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa67ed619a050501ad250318e293d69e80eadd4e505daea162e616fedd009b54. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NOMLN1801040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8ffb3f9b3c0db0cf27a014e4a5b8eab4c5cbe48e4419f1d37c9452596ae827. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/SEYWK1500701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171c039523dd7a6338fd96b43b2483895d5a7bf702330c1fb97d1801e7c009f. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NOWAT0905140.
Kors på halsen, ti kniver i hjertet, mor og far i døden
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48fe7ec6e35f3c08e4578f1d5bfe1e8d57ee863773694422b9e8b6d04c9ea0e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NOHDL1201030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2bc226a9d342cfb864b142740dd3eca319cfb880cbfa638470c1059dc652c0d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOHDL1201040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6f7353b21914d989faef3ad4ec8332ad4078cde12cf91268216a489f71f73d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NOHDL1201050.