Madcon is a Norwegian musical duo formed in 1992 by Yosef Wolde-Mariam and Tshawe Baqwa. They have released eight albums as of 2018, and became known for their 2007 interpolation of the 1967 song "Beg
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 0x2e9fe7e5ef16f3fc0452be8d1e72c963e74d220f063e11b2f24087043314c718. 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/2867c3d1-745c-433a-9b3a-b92bf0b9144a.json and https://artists.proofprofile.net/proofs/artist/2867c3d1-745c-433a-9b3a-b92bf0b9144a.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 0x526a415e31ad8dec019d2c42788ecfb1a7828773b63774cbd337cbbe197de802. 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/NO5281501010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327eb5fb12a2d2a6ea0915494c06c9e84dbb64b76685b0bf8bd0b476388ffc3e. 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/NOBLV0703011.
The Importance of Dancing Like an Idiot (Part 1)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a0169a6c75520c2572a343a07013debd1beb21e9c4317b4d3a26254734cab9. 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/NOUM71900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a0169a6c75520c2572a343a07013debd1beb21e9c4317b4d3a26254734cab9. 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/NOUM71900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2239c430483f48737b94b2920c01141da5c754236c2f8adf695c83b7b00c41f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12338552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d9b7db3b496506a7ef3be4bfa0ed8e6b8750a10a7adb58c3fb8b42d87972b2e. 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/NOAAC1600044.
Girls (feat. Madcon) - Alex Mattson Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b32a91cacfc6cbad0a2f7904ee7276d7cf39f7284939e9fa9e3ae704f1a9cbd. 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/NOAJR1600033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6200406e0c2ee84775c63d78b8ada61275e01d65d5c259afe629c71339376690. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DKUM71300101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7296ecf09cfa35ddbb002976cb5423890b38dc9051c2944949e90d9582c62414. 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/SEVGT2100290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe365356cf70ccba80009d5ec29d47b4ef40df26621236af5121e81a4fcb3c170. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/SEYQD1100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cebb6c2f7d3edd78bdd60c47b1f79f972f7794662e8d2ec3a4e13df46c9b2fc. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/SEYQD1100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff5004e9bc39a3d8b9297c4b240b991e70327eedfbd65b95769829c3f42839f. 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/NOWAT0905010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171c039523dd7a6338fd96b43b2483895d5a7bf702330c1fb97d1801e7c009f. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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.
One Life (feat. Kelly Rowland) - Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0e417ecf4768e4dc63bd40d927a234c6f8426b154ed624ecd664820392c234. 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/NO5281301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1b9fadfa3eac5e96287c840ce28817b7a6fb64a2bf1aaae0ce8862136a5d43. 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/USSD11800233.