Kris Kross Amsterdam is a Dutch DJ and record producer trio formed by brothers Jordy and Sander Huisman and Yuki Kempees. Their music is a mix of various music styles including R&B, hip hop, funk, sou
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 0xb77a8efa02342c416fe67c0b3ccb37427028fab5845725a3532cf3aef9fa2856. 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/2196d806-93dc-437d-9720-7d43a27550f0.json and https://artists.proofprofile.net/proofs/artist/2196d806-93dc-437d-9720-7d43a27550f0.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 0xb96d34fe57a80edf48a2a96993f022af1de34fd00eefd21e33b72efdedd39aaa. 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/NLS242400034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3f8ada534846be664a93d741a18bc3a6a2c0a330adee37c3b805a3facf8608. 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/NLS242300035.
Make Me... (feat. G-Eazy) [The Remixes] (feat. G-Eazy)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d72b26f99bd6576a3a7fa23cc0b3ced2f4dfb03c080ef45f9c129d089b4830. 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/USRC11602332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6ea5507238ce04cff9c533cb3f88ecbd19ef60b2109ba5a0f7b769bdcd59a1. 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/GBUM71801018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3997d1f11fc0e99321d411fb243b2d80b2469c6d85eb2450a44a8094de0711. 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/NLS242200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde3f66e5e4d877dbfaab82aee4c92169cc81fa7427c6e00025a5c903c7e4a416. 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/NLS242300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3997d1f11fc0e99321d411fb243b2d80b2469c6d85eb2450a44a8094de0711. 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/NLS242200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a222dd249f0d40e65d8fe2d516b2e2904db0b94d16662d979e00a90bc5c5e2c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLZ541900343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa90820f8bcae87c2a46576c9838c3f09bf759acddfbad9ae10a38f673fd1672e. 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/NLZ541900344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6dcd2da189faf7f8a8c5f828d27718da9041217b27711209b3140968d87f27. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/NLZ541801060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe6dcd2da189faf7f8a8c5f828d27718da9041217b27711209b3140968d87f27. 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/NLZ541801060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68029c5a2da8fe85089e6b4af86e033c7449b8b7cb25a9077798682264b3741. 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/NLS242200081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd38a7fdc52008f17dbfe3d54209b03dd06c29e1d0a9dc9fe6e4a253bb226634. 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/NLZ541600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd5e1ad51989821c2b5f9d90fbb658443a6f0242abb161b620765e0fdeb4918. 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/NLS242200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8404c5dc6990a151c6034aedd1bb404bac7fb6caa7f307622bd60f864b583c49. 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/NLS242100617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8404c5dc6990a151c6034aedd1bb404bac7fb6caa7f307622bd60f864b583c49. 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/NLS242100617.