Hailaker is an indie pop music project of British musicians Jemima Coulter and Ed Tullett, who work between Bristol, Cardiff, and Oxfordshire. They are aided by Portland, Oregon artist Mike Roth who c
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 0x1e8159d3bbdbbb1df86c2d53e45d1539991d810064e1f474d58da19bbbc0cf4c. 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/8a325cbb-f700-4cca-9315-f635fe008237.json and https://artists.proofprofile.net/proofs/artist/8a325cbb-f700-4cca-9315-f635fe008237.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 0x707d1af0706c9aa3791287c8f37b8d1c3ede95b1a256c9c325ad4a824f5a171a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:03:01Z), 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/GB45A2300297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34fc06547c4d1d37fe2c8a24073c658c94b716be3d91c1c3bdb04288071068eb. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T10:23:51Z), 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/GB45A2400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4a1ec164f3c02172bfc8af811c1446e11fc936a89d7779c7ab191a2e724bc6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GB45A2400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd621b82c5fa090ccbad2f1da39de306052ab9cb15c69628274aac630048f4c5e. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GB45A2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf56ac4f2fc9e0cbe96ac402fe60093a608b97b7900e9d00d1066c1d153bacd82. Chain 2 (Bitcoin): anchored in block 957827 (2026-07-13T08:59:54Z), 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/GB45A2400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13e81ee26a420b6ff70722a9b047706f38acafcaf0ad2a2a9c00bae36bb893c2. 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/GB45A2400050.