Lootpack is an American hip-hop group signed to Stones Throw Records with members Madlib, Wildchild, and DJ Romes. They made their first appearance on the 1993 debut album by Tha Alkaholiks, 21 & Ove
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 0xf34152a82dcfe41d76e86dd9681eac88ad1d8d24e661b7f7a281417ecbea14e9. 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/f347d4cc-e1e5-4d5f-a828-c87fe9f352e6.json and https://artists.proofprofile.net/proofs/artist/f347d4cc-e1e5-4d5f-a828-c87fe9f352e6.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 0x147a60a9290c6c7c8534c527d345a3ffa4e579eb7c3e93ad8f57e4d184b7f535. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S70419001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b2d7939d4a9a213253424b2db9fcc17897c720ce6c7b9c08d86d988459d769. 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/US2S70419002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd62bb4b0749825474b53e0ec665b68ad6524076eec82409e0a0cb17d18d88b86. 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/US2S70419003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e41952e68bf155fb94f1bbbd2953de82f79a996265fa8532a9fd70bd230a6a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S70419004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ad6e97c5bed20a60fac5332721175915712504606d8962403b50be319f35083. 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/US2S70419005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396d9057ba7084f1f36c96accc5b44447ea77096d900a7c9a9c8da18670d7d96. 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/US2S70419006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cae405145c15b61e2362a0ed1dda415296ceb6bed2a0f855ee1528776103c3. 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/US2S70419007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c979463548935650e762a3282e57c328c454034b31352a0abb740f75f275b6. 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/US2S70419008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a3551f4a7d23968595e459acbca0053660dd8c549a30e66cb8c635d3ba84611. 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/US2S70419009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5728790476d72cc60339235809c232a3c28c340db6a88dfba5e2d3fbfab0de86. 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/US2S70419010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4de2e15a016f633dff604c88e5f36091716cd599b311f362eb1cde3b1f806f1. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S70419011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d7cd670bf1b3efba0fb10b30fdeac5468b0d0c96a3de1aceeaecab6f05264c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S70419012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6af5c68366aecbbf5462e19ca9df41fcea129456460ff669371d2b8bf789bde. 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/US2S70419013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5685758d3254fa61c202fcb768039f4249b4e6a565ac05224d67d7b9e8572152. 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/US2S70419014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa15c133d6e421cf30d53f71e34e7b84342ee9bd8833abd2ed72a065d3a44a1. 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/US2S70419015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe67e7746b795a0d65532cf1dacb77169569966eb7c9cc40352a960791b3c89. 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/US2S70419016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4339d9b48f87953facebb7dc5ef44fa7a62ba15d0757c9e764e0f15e186663. 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/US2S70419017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571e7579f11ee02598f33dd4f98522614ab071b7b1f7e6d8915606c2b6684b83. 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/US2S70419018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f82ee0d37c0392dc1499850d77295afcb144a29232c63a488fc594840b1816. 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/US2S70419019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d99ad149080ee4a366102106f1cec6c3aaae39b337aebd821570eb089fc7ea. 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/US2S70419020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf68c4b3f435c51f2e6303491832d8a035b52416eef7812c9f6441c58fdc5c83. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S70419021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3025d9000b7faa0c86da6b3aaf11901a8c91a2bca57a6a89c8d2fc5574c7f4e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/US2S70419022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e3044cbbc424636d10dc261291eb146fcc283f3ada3d727c96a6139907a0b55. 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/US2S70419023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5d974a149ca963936a8f2ee7cbeb931d8fe738ec918bd17887288d2a30003cd. 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/DEG931791892.