Kris Kross was an American hip hop duo composed of rappers Chris "Mac Daddy" Kelly and Chris "Daddy Mac" Smith and formed by record producer Jermaine Dupri. They were the youngest hip-hop group to gai
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 0x2ff00213ccacc5ef88675001aafa9960cadd56887016723a125c6ea26ac5c904. 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/f99010fc-e640-43e3-be8e-061eb618f11a.json and https://artists.proofprofile.net/proofs/artist/f99010fc-e640-43e3-be8e-061eb618f11a.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 0x80598c0f22662d1a1204976154e37d34a10384fec85de9d1cf55e23f336c7989. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:26:52Z), 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/USSM10013182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43ae28ff177e3685e277dda680b2fc19848858972f50bd267112b7eefb49ff5. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USSM10013186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452e1c8cc297ac4c73a8a0170521a5db56400c40a5a2541868a14d712d768545. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USSM10013187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e613ac80496359b88723fbc32d17b55f491f2088a3db8c5b64f92d3a3228ab. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:30:59Z), 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/USSM10013188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af20668df887820e6f6aa30f6c8a010c603ed02a63fc31595457a6ef7afc421. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USSM10013205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9552d9d00736da36a0c4af8be30c13c8999bb610cda96130bc79aea1b85de0d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USSM10013206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d02c36355c97bbb630dd766d143d0f0b2f70d686779b63a53ce7ba3b984e284. 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/USSM10013208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x772d621ae5793e42725b44c3e7b58415dfb68ebeeebdf7dbaf3f97f46545b46a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USSM10013210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc812d46c9a59f3b6b006ca2a9b1843e166a8d95dc9655a747f4a6fb5e316ab6e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSM19100081.
I Missed the Bus - Backwards to School Radio Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4f9e46062e16ad5f4cdea2f593a15632e033b7c7d9601d906d5ea70aa5551ff. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USSM11804474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e32c99a7e670467eddd345821a51618c0ac267eefc290f15ca87ac9e91b26ae. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USSM11707024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c225dd6d6fa97cc956938f294cafa18bb4ba83ba03e4a6e2383e2c23f47769. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USSM10025048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3c18b782677597586b960eaba99714f6ed2595a7415db885ab84794f5e32f8. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USSM10022936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2ba2d02431d25c1ec46b47fea9a3dc03d681bbec1849fc03d7785e29d5fb24. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/USSM10022937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfadd1e8a83ca21ad6d5a61198cd39324d4313c41c88e0b728697b3d4a135df. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:38:14Z), 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/USSM10025049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d245d68a7944ca0da1c047d7744b94bb20c3f968ad8813a4b4b2080e420518. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USSM10022939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a45fc902f6629ae6632e7f633f2b85594562198db38c8ede722d2987f3dc9a. 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/USSM10022940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9d4e6ee7648e33f275be827bbad5ca676aa42285ee7fd21e570bccb297abef. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USSM10022941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376ed780d33c5bc03fa5a39a9bc32c66d7f7cc66ba663eb907071cfeeea221cf. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USSM10027701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1d9560a12ad2738cd70d5012f63de0d1d8c9609ef804178cefc84f5cb20088d. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:50Z), 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/USSM19501549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06ed92ee6cb01a1674316d31b9f0a52d6b95d906570d5b66a59c2744207207c. 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/USSM19501802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x501b87a43402ff880d2a73c098d2634693e93bafefedff2dafdfb297712cfbac. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USSM19501804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a4f47f031a52b3dec4770b140657630d0859eba9bc5921472bcdbbbc3bd29e. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/USSM19501808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfffe7d3229f33bd5bb51d04dcc19ad3637b43863de94dd33684034a96f579586. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USSM19501811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb7655d791b78808c1b6818afd12e6fe2ef1cb541bba7e41a961b5292abf07b3. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USSM19501998.
The Best Of Kris Kross Remixed: '92, '94, '96
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc812d46c9a59f3b6b006ca2a9b1843e166a8d95dc9655a747f4a6fb5e316ab6e. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:26:19Z), 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/USSM19100081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d25a4e075e94589ce36a26b83a77f2084bc46d8e37a6afbad8038839edfb33b. 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/USSM19100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aed3940f68b78fbb81d9d1d1ae3c3c8a5895ba8413e16c7d113a48f04c687eb. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/USSM19300194.
Tonite's Tha Night - Kris Kross Redman Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a035689f819d1c3a954db167ab894de3344552efad37c5f2ad287fe1d19a82. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:52:54Z), 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/USSM19503317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dbb33486884871cc9458c238fd2204b2b91819f139dff4025e6f68d0d0cdbe. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USSM19603533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05c81cc7f3560c9db22fb1e93aabbd4c3371d3473a67a5a51f94f71e374edfb. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:25:58Z), 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/USSM19201498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84e0b426cd95c578a5126d735a3b13d2d0e0417ec8e616674cae146bbd3148b. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USSM10603030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbbaf7290f045d1ca4d27fb0166a0749596dd7fb7eafa63d8c1bc228a78697a3. 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/USSM19201187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5cd7baf16d748f9707b58e74aca9aad80c59b8ae080b0a43f907bb6fd68e48. 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/USSM19501806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf28916f4e729444a013e3f57c3e0a35212df90f6356f49273451b4bfbe1619ef. 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/USSM19200533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ba900692f2ab0e55408484c7d3ead081fcb2d69efc2d587cf4331988a18197. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/USSM19200531.
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