Bromheads Jacket (briefly Bromheads) are an English three-piece post punk band, formed in 2005 in Sheffield. History Bromheads formed in Sheffield in 2005, following the split of a band called Fixate
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 0x075e14408e7353eea9434e9ab25b6345d0ad6db9c76a00ac73eb582197986e28. 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/a0d64fb1-1f3c-43c4-8820-60f823c7a923.json and https://artists.proofprofile.net/proofs/artist/a0d64fb1-1f3c-43c4-8820-60f823c7a923.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 0xf05bd3285ad423a2422809832ff1a9d139ce0ca4301490f1cfa3af60e5e59476. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QM6MZ1836824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624bb92f2ee94020c78952a18e98379bd8abdad7e2af0d8df7d09f66dba11368. 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/QM6MZ1836828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e9151a6b16cf6a25ad85e26613dcd2660ecd19588ca7f18f973fbef3350d19. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QM6MZ1836829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b29cafa8fa1a5bc110fa866a7c0eabe1d5f3bd1d20086955aaa17220531817. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:22:48Z), 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/QM6MZ1836836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a71d12fdcf8c94670caf7009b79732a2b0335e51c10d578f0e9cd0120b1649. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBPLE0900022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x923a4bd64cd93519e6041bb456fb0022aeffba955aa32864b2c68571483fb263. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TCAIE2426834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0f668703d318e25a1c1d9f4b5be7a4a2d6d9251d53dcde2d6ce10fe40ab238. 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/TCAIP2452968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x783993ac1559860ae0a2e85b2f8c19ab85c7fc77bbe55c2c6f2571d77ef45c9a. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAJE2500640.