Hail of Bullets was a Dutch oldschool death metal supergroup from Rotterdam. The band's lyrical content deals with the Second World War, and is based upon the research of vocalist Martin van Drunen, w
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 0xbfa6ab3461d94372f66d8b747a0b86c9ac41ef7b963f2dbf49cb5748fb33b663. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d70b46b8-458b-4683-9a01-ec567b28502a.json and https://artists.proofprofile.net/proofs/artist/d70b46b8-458b-4683-9a01-ec567b28502a.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 0xe0a103cb14c3473b4a26374a231abef131f76fdf44db2e9fb1088fc3041ea079. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T10:53:51Z), 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/USMBR0805759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f0818209d230483f8c23cf44bdbac091fb683035d3bf54bc78f51ac9285ea. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USMBR0805760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc69aba7c678db94283a85cf337a1fed28c88ba37c828a4fbf5da21beb30a0290. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/USMBR0805762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33552a978adaaf377d0b1f755dc48ff5fa4be44ede9c9950c6320042aec583e6. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:17:09Z), 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/USMBR1007708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc3e3a5dcf3122ead64f7811b5c55ccd43f009f1128526c913398404274c392. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/USMBR1309867.