Rapsoul is a German hip-hop group. History Färger and Neumann first worked together producing remixes for the Frankfurt-based record label 3p (Pelham Power Productions), working with the German po
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 0x4eaa10b9d449fcc06d6a9d5b4979667146421f394e0edb36c128a7a1e7b9c671. 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/a1ffce68-2b96-4133-bf5a-7789fb733ef4.json and https://artists.proofprofile.net/proofs/artist/a1ffce68-2b96-4133-bf5a-7789fb733ef4.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 0x581485c204736d4a5ada712214784c8ee1fc6d58d94eccb06c6c9936d3f1b66e. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QM6MZ1989326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ed451f8705f96eb4dd0380fbcb33958018cfe667af255eb7e3243afad8cb71. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QM7281803968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a575f549c729a57401bcaab1e4af3f24eaa156acea15e2d5280b06b1fce3ad. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM7281803972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d10c16ef22ab96904aeb3e8db6b5e0e860f5ede9ccfff5029c68d309516b53. 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/QM7281803976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28582d7a0bafe7df0d88c2002284201bc4bb71e569dc4a2867519f32f9a39cbc. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/QM6MZ1989469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c50f4a74f8be58f96bf930a86d1afe8d09254fcea84855441045172a34b8169. 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/QM7281803825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cdbbf4228f1d483ad526fb7f55ba9ce638ec58b34504870253837383758ca5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM7281803828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23753f0dd224f986a8133fb44abf08e9918132dd63dcc07edeaf8ccc3551171. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QM7281803830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a1013eb0ff263835728733618bbd4292aed7261ded8980625dac5b2aa2c917. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QM7281803831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4692963dc37ac3d51f9e83cc42ca61413af4b05385607b774bb3984bf5bd57. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QM7281803835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dc0fc3b0eabf9d59ede36113df98fc0f7da6c602c96653f52a0165e5ddf065. 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/DEZ530400064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e927c5b2f6df0be85bc382271e546a6ba5e5ee06a48c44fcb68bc64830b6ba. 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/DEZ530900073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16443235b5f59d5cec6a3baadcb66e805c0793a836717e23a51732387b9fa3c0. 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/DEZ530900074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02732d0f54c2690483600249c1c41ec39bcbaa141b9f13eb6475d16f096f2b5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/DEZ530400066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f6b84d8bacb1615698a13d36991cde248219c62631ca47d6b534e7b1bb4ee2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DEZ530900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b1e5346daaff34787a0a7b6adf40b09991b872c93bab633b7b60491271af92. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEZ530900086.