Fracus & Darwin are a British DJ and production duo, known for producing a variety of electronic music styles. They have been guests on BBC Radio 1 and have performed at clubs and festivals across 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae86fb2c2ba861934202a5d173857af767f74ece77a8067c44f98cb75478f2fd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/393ceaf6-9686-473d-a86c-7dc4bbabc586.json and https://artists.proofprofile.net/proofs/artist/393ceaf6-9686-473d-a86c-7dc4bbabc586.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 0x6694a9741bb9ef320dbabc61454cccaacbbc97c0cbc1b286bd6820b67ca3cd64. 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/GBPSX1000233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebba7d7e603b59455b401e66660327aa043eab43d9c23d770630f9d8118b746. 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/GBPSX1000238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9937d02227acfbb5faf33ce132e2f2bf005e7952f347f4df60342c644d4e5750. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBPSX1000231.
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 0x85745b50d280b6292056395425373b48c193e8585de2243fbaf1a14edc7769cd. 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/GBKQU1466858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426eeb3f4639976ba39f067a2d8cb0afc292ac181d8b3ebf12c38d9dc3dcb754. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBKQU1884414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14c282cc577d725b5efe06f35702389cf38fe4f1b95ce9121b3779c432ee5e2. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBLV61800958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141b30ff20b61f69b0c8fd1c94e84ab81dafca3a2ffa1a805db7917213471893. 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/GBLV61925090.
Consequence ((Reward Circuit Extended Mix))
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e70f933a41ebb7db098dbc75b7fe629c326d12166a85fa52b1c1413f90ce450. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKQU2087119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583aa503be90d01a35d7b0bb57e6177f41c41c29ddf74ca0a9ace04fa22e3dbc. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBLV62132898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab3014240aa7c6eba5d467e0ae73ba04be9fcd082bde869b8aadc950cdfb19f2. 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/GBKQU2229375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5ebcdf200f3cae2a089520f3d596af46e50b57b0b9461e91deb91e494bff04. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2261790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde6d3c671133185484041d8e08a768d79852938c1f712ed03e3702a5286145e9. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/GBKQU2307744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8aa894d00bf582637dad02f4311e06c5b54d84eb8c58671bc18dfb749edf3b2. 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/GBKQU2354274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce4b6fa88ead3924597d6b91e5d007dfea7622ba5dbed8b9ea84a191c68d0e8. 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/GBKQU2462423.
Hardcore Heaven Vol. 6 (Mixed by Fracus & Darwin, Macks Wolf & Jakka-B)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63949b555bad12c9cb89f9cdae645963d83b0f7b4388817726e1aca99217b67d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2056578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6eac16f8379186f869d3bdefbb2677147b8d988417dd65679b00d70f2ef025. 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/GBLV62418789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x973c8429879eb1f1112bcdc555261bed2434257ad2041d68052bf5ebe3cdfa4d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/GBKQU2056561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5128f5f60871244e2f9a6f461cc46dddc5c988cfcf0200c3ed08346cec81d6fe. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/GBKQU2056564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc47398632920ef53736d8bedc2e97b4e71d1162b195a3616ded4c534daad7f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBKQU2056565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2658ed6c6cc93f23f87a545354b6a2db427a7399602f16a16eeaf4607b92256a. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBKQU2056570.