Knife Party are an Australian electronic music duo consisting of Rob Swire and Gareth McGrillen, two members of the drum and bass band Pendulum. The duo has worked with artists such as Swedish House
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 0xa39f2151a65803a00393d9faf9a1b07ea52ee51a9a17fe807b45408d758f2b8a. 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/cfd7077c-2bea-4f32-bcb0-55aacb423cef.json and https://artists.proofprofile.net/proofs/artist/cfd7077c-2bea-4f32-bcb0-55aacb423cef.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 0x4b05d856c56c0b2768236f05084e7e14bc6a330eb71ce8d27e2085ae79077a25. 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/GBAAA1100772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8664a460d0ca30ebf1172d5aaeace7322a7e2ce61ee78d11aa3b4427aba22158. 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/GBAAA1100771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1316de865e16865388eaf2a19d8fa1dfd195907439e04d6196ebe6945247064e. 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/GBAAA1100773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e69c62f6dbb97b094ade34f80a26847d3e78d8d925ae514d9b2091fbaa46587. 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/GBAAA1100775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97119d59d3541f53f495e28434e276ba2b0505ae55b444758cd76c4503b890b6. 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/GBAAA1100776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8729f51425ff13852752ea7ad3da2fdac6d343c4f4fc05e1309799e7203e24aa. 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/GBAHT1200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x626265ddc804032f97115e00bcd51d470bea0a7b37e0c21c882233610c7e3727. 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/GBAHT1200224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270d38a933b72c324a68b067d91446b6f11c90d3cc1c1a5b09abb940aa8acf70. 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/GBAHT1200225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59893a711c21f7738baccafef6ce440be75e25d0b6394faa0d81a881f6a86b9a. 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/GBAHT1200227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b05a2360835c6fb24aeb7aff6d22018047ebe807213799133510b7584a8ae5. 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/GBAHT1200355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaba945ea3827736cc63fa97b35cb6107a35ef05763c00297fcb9f02152b9a9eb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBAHT1200463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11139569023a80e112367c2a88082d7f3524752c217e2c8932de02450d60e937. 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/GBAHT1200464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60e50fddfe3d0babc41a3e79e7886189f237c6b9eb73ba8ad6b10353e1055e43. 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/GBAHT1300263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521079675975c35ccbb548a33c48827fd4daed1be8d48fa4e6b70e02a01d7cf0. 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/GBAHT1300264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1ca11d9373a4a589734e5ebf6382f51a412388bdb45d87df33714fee8e45c6. 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/GBAHT1300266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf099aaaf3b84f0247f0eca0d380e51d511445d46545a43014f01ba05a427a220. 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/GBAHT1300299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x110d03ab9bb044806c5e40adbc7a28f19aa675ef9d914fd0d05de539b75fc3aa. 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/GBAHT1200462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8664a460d0ca30ebf1172d5aaeace7322a7e2ce61ee78d11aa3b4427aba22158. 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/GBAAA1100771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270d38a933b72c324a68b067d91446b6f11c90d3cc1c1a5b09abb940aa8acf70. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAHT1200225.