Gavin Richard Harrison (born 28 May 1963) is an English musician. He is best known for his long tenures with the progressive rock bands Porcupine Tree (2002–2010; 2021–present), King Crimson (2008, an
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 0xeafe5ea1a9c9f3b7be0a391b680eeefc2dbdbba2a716ef69b710964e09399684. Chain 2 (Bitcoin): anchored in block 953618 (2026-06-14T09:16:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ca8a5c0-24ec-4c64-bcdd-0c3d3b4307cd.json and https://artists.proofprofile.net/proofs/artist/1ca8a5c0-24ec-4c64-bcdd-0c3d3b4307cd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Door Kickers: Action Squad (Original Video Game Soundtrack)
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 0xd4c06400afa510f7eb4b5bd15aa1167555c53efdaeabc67aeaaa4088bc8cac86. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USDHM1819307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a254f3232a70b8d14a1d2f8c8aa018c8fb4ec12626ba33fc1bdda65ca402633. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:09:52Z), 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/USDHM1819312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe5e6ee91f81072f5907a9fac6b95138bb4f0bbf3fd0d4bd023f2a44d8b3256. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:09:33Z), 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/USDHM1819313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5819047870844d5182f1088c1e711a2f97146f0322249f15a2dc559deec4cd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USDHM1819315.
Pathway (Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddaedca012367da38beb52599125baeb24175fbfd1fd686250e9de3bf9b0d78. 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/GBFFM1922654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78092332d69ffa2274e1ae4af4164b5e500734b9230352a9f107d414fccca42b. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/USDHM2502360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7774b85e8df2e65a0928760ebfb7e31f9f7c7078b0711c44121ac6163ce7100e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USDHM2502361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa6f715976e6f28a0140dfbadd0b48a4f17483e28c9afae5b5d8fb3cc94e03e. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USDHM2502362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76d6905780977bea3489554fb108147bc2f8efdbb39545d50eebbf0c17babfbf. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:06:52Z), 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/USDHM2502363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ae4f98bfb506d638ec24b89d96af4773ab5e0d2bb220f9355ba7a4e794163. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:17Z), 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/USDHM2502371.