Rowland Constantine O'Malley Armstrong (born 8 May 1966), known professionally as both Rollo and R Plus, is an English DJ and music producer. He is a member of the remix/production duo Rollo & Sister
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 0xa93c48d5af308ab68b1d8782ac80d62de94d5a1e35944f0c63d3da97229494a4. 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/ba7b2645-3f42-4556-a7d4-f9f159b20439.json and https://artists.proofprofile.net/proofs/artist/ba7b2645-3f42-4556-a7d4-f9f159b20439.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 0x24cf8e2fb88725f15621f1d0c3278b99f8878e89d76760bc7e88f529af489605. 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/GBBXH9820028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24cf8e2fb88725f15621f1d0c3278b99f8878e89d76760bc7e88f529af489605. 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/GBBXH9820028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e0075cc4c2c2fac5326bd7a33a05915c8c2007462b69f30af443a1ef1a89648. 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/GBARL1501052.
Insomnia 2.0 (Avicii Remix) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd926ab3f3ba6c8c50c13e5579e84dc7f8ea8b237df7e9cd940c6caeafbc6b990. 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/GBARL1500993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af2cf237babfda2991f9c6f9bf9c68c0bc42d59325c064b75089bc0982283bd. 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/GBBXH9920071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bdd4696974145ba1214129042e138dc46b0e4313f7937cdeec9804efd20f599. 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/GBBXH9820024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f172f58fba42dd4abc7eac3f573c5e50b573111e895f1f909ef45c24ec6871. 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/GBBXH9920070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d27f6bcb8162b7f70aeb95efde77dc6a18eb51c0778320406a4331d70f29d2. 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/GBBXH9920077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8d27f6bcb8162b7f70aeb95efde77dc6a18eb51c0778320406a4331d70f29d2. 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/GBBXH9920077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61681f4042dc8cfad7b4b82ed7619a7bb1e6addfb582835834f2d14f95104d0e. 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/GBARL0801422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbacb2712ef17cb8f3567cf4980f207f9eeb65a73114080392f3428d3afa56b0. 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/GBUM71903439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa870e972c081e18f054024a96854029c02016c46cbe9ab5baf56b3cade02389b. 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/GBBXH9820026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88447f61cf66f091b874fac40bc40938d724c61b1a0991a88519cf64d9a9d11. 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/GBARL9500199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf92c85290029cc0f05a6ac1556f55042ae6791a148b8c7b9248e93cc0e6771. 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/GBBXH9820027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af2cf237babfda2991f9c6f9bf9c68c0bc42d59325c064b75089bc0982283bd. 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/GBBXH9920071.