Bad Meets Evil was an American hip hop super duo composed of Detroit-based rappers Royce da 5′9″ ("bad") and Eminem ("evil"). Formed in 1997, the duo's name comes from the namesake song from Eminem's
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 0x2b056da0abed73203d7bc456ec427d14cc1f24c0285e7c7e7d96100833a7cdb5. 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/45483d04-6bd4-429b-9994-156932b1d81a.json and https://artists.proofprofile.net/proofs/artist/45483d04-6bd4-429b-9994-156932b1d81a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nuttin' To Do / Scary Movies Maxi Single
Hell: The Sequel (Deluxe Explicit Version)
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 0xcbaa7cf017bc2db64cc8cdd6f48d60be4574436c771a8af5d292ef3f452523d3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USUM71107497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd349557b978ce8d08448b22399749c62d2a34a6844978ab44207ab4543927773. 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/USUM71107499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d90b30ea3b8a2843a8e82b3fc3a9298988a9a1e7d8d50bbef8f23d0832808. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USUM71107500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffeb977aafe3ed9f2fbcd14012e23911103ec13c7efd2a0a31d66ac8ac7cd73. 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/USUM71105406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d77c0e2ec55317349083859ab668ec4ef676f03032907cb01040b8115a8e23. 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/USUM71108179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x142d5980f456d66c593d703d039b48323046d0fe4dde80f406a3e80f9f239ea6. 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/USF430610001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x602aa02ecef3f2abbdc08a051024810800bdc1264114bfee40b22d79109cca20. 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/USF430610012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607d90b30ea3b8a2843a8e82b3fc3a9298988a9a1e7d8d50bbef8f23d0832808. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USUM71107500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffeb977aafe3ed9f2fbcd14012e23911103ec13c7efd2a0a31d66ac8ac7cd73. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USUM71105406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d77c0e2ec55317349083859ab668ec4ef676f03032907cb01040b8115a8e23. 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/USUM71108179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffeb977aafe3ed9f2fbcd14012e23911103ec13c7efd2a0a31d66ac8ac7cd73. 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/USUM71105406.
Southpaw (Music From And Inspired By The Motion Picture)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2aea57654b043740a6aa122bd0f1d4f8fa563e662cc88ca942ca3f70b96a69. 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/USUM71509171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb961f0b584d7df4c506e07f82a0051353aa0df5ee5e03eebc01cbd1a334250bf. 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/USUM71509173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8ed43246422e64eb0f8e01c370c6ac24948afa574e0b5de09e00b909431909. 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/USUM71415912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffeb977aafe3ed9f2fbcd14012e23911103ec13c7efd2a0a31d66ac8ac7cd73. 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/USUM71105406.