Group Home is a hip hop duo, composed of members Lil' Dap (birth name James Heath; b. March 6, 1972) and Melachi the Nutcracker (birth name Jamal Felder; b. October 5, 1972).Shapiro, Peter (2005) The
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 0xe83e32ca42d0544f30b45a7b1467d47572c0910c56e5b329332d72627dfbe2bf. 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/2407754b-00c4-44aa-87bd-57f891865507.json and https://artists.proofprofile.net/proofs/artist/2407754b-00c4-44aa-87bd-57f891865507.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 0x240d7e52c18ee33c14919e3c6eff048d1d6b9873d88d93d3a289d822f2e0477e. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/USLR29500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71c69ec5e311551a0431f8e6967162b2acd88520fb080b511446b9eb940ac77. 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/USLR29400213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169d0f0c6f5aff3c300de618ed7cd2d7cccbe2457354015fbb8060556f06f261. 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/USA561042300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7494136a82f4024ab9eb9996375e8bca95509c2ee02fd8b7bb3ae3391435b7e6. 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/USA561042303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652a5fa014d788e8ce903f06193c5ab41e528974ecf0c5852e7bb22f26fca177. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USA561042308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5586239a79fa7aaaf4e6fc9c26c085ab58eaeb84e46a8c4492e2d37a452f13ac. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA561042310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5b05165313b59877c7e1aa200927402912616db3576c3b9458457a8d0481eb. 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/USHM91914426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25137f1cf0e19594299ed691cf86dc96646d92cf1fb744356d8dc877142a6d7f. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM91914427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9834b09a5bef6a71fdec6b248a9e6136b1d703454a62b6d1aa2c0c8a7463a8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USHM91914428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b67d4c166d30ffdf8584cc5a4c1c324edecadfb86d6d3323d1d72374e6d23. 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/USHM91914429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315c7c679256aead860ba24d45bd47d9d1fbfcc2fe12ef4a3f2065e0d9b02cd8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USHM91914431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac94df2730c3f68ac1e6f934102086243eaa63296b9a0651a6e415daa818b9e. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/USHM91914433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa74bd0db4459d217add7d4e32dae55c9d9b04e068e67edbfc4829c39bb64cf3c. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/CH6542154279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca808c741b32b66df5c95998e7149c6fed2115a4946e0cdea55f3fcbab97a7e. 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/QZJG52430660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a9039f7d7888dee160f2b7b89e6b6e23a3cd88f6cdef0401f02ca164463d81. 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/FR8GV1844790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x038f613bcc786676574b73a561edfeae67ba029eacffc3e88a0010907364c34b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR0Z50036337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cd29fb8350b72d00b35525e55f3865da73a609e9352e7423fa69214baf88e6. 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/DEBL60359136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1fc910bfd03fa16d21e45b7487d01840f7eb2df93f5294be60505eb2686aa6. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/FR8GV1830090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d1fc910bfd03fa16d21e45b7487d01840f7eb2df93f5294be60505eb2686aa6. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/FR8GV1830090.