Ross Hill (died 29 September 2007) was an English BMX cyclist who won British and European titles. Hill died at the age of 30 years in the early hours of 29 September 2007 when he was involved in a f
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 0x1e1f55ee8edc638801e030f7ea172e87972129b0297e48a56e8779b9cc4984be. Chain 2 (Bitcoin): anchored in block 953654 (2026-06-14T16:26:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a7f3d03-c610-4201-8845-9d6207b8fa51.json and https://artists.proofprofile.net/proofs/artist/4a7f3d03-c610-4201-8845-9d6207b8fa51.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 0x54fb5dcdca9586040efcbe7e11bbcb25158b4378b8b16b0d53d9acc1a71e6f50. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/GX3Q92417180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e39b7e5c7f43519bffd49a5c9566856d2c903cc8a0a0f56ba758a5044302323. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/GX3Q92421990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x174c2c27b18831b8df1d3eb5b0299340c7805ad02c7fc5b4e77df5a05046c237. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GX3Q92416104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c3676489bc28ae7fed15fba2b22b99c07675a2929db64e8a1d8ad5bef5cb64. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX3Q92418008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e7d458f6ec0e7d8c72d960e57ebf6d34abc8192be41da122323baabc038501c. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GX3Q92427535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5993cab541dd88e3b4e9c0519f19c480224fbb370be11cd073c70e7d6b6af341. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:07:31Z), 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/GX3Q92441253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec4f9adbedac221054ba077f989127164f367d945e66d962a4c27d61bcc35dd. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GBMA22423974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025bd836325d30d8e689b4fe5e5ed132402e8a3b5e5d1c53b83541c9f0fd82c6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GX53U2343137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb826703fb881c2f9903d401e477a4686adbe1e919a5a7e351744dcc76fc146. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GX53U2354493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95d064db1b3e8880de9443efc660f5faed1df0c2eb38d5699e3f66531fd57445. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/GX53U2459245.