Adam Charles Clayton (born 13 March 1960) is an English-Irish musician who is the bass guitarist of the rock band U2. Born in Oxfordshire, England, he lived in County Dublin, Ireland after his family
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7641e728bd97973cc4c51da44535ee2dffd4bebc962df9b4e20ce0302e72cf73. 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/6ee11833-c1e4-4ccc-8aea-cdd272072055.json and https://artists.proofprofile.net/proofs/artist/6ee11833-c1e4-4ccc-8aea-cdd272072055.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1c2b115ff80d1902689d61942df78630a62efb66c9c961b64dc36451b8439cd. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T19:27:18Z), 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/GBALW9600012.
Vitamin String Quartet Tribute to U2's No Line on the Horizon
Eminem Like Toy Soliders (Somewhere Over The Rainbow Mash Up)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9f4c71e2f3fbad6e4ed03ba0e0cc1bf5662de25d25417ceff63b85541f51b2. 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/GBF071301580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecf013dd5f93ef8fab2de54f34b709aef0fe3930cf7fdf03a5c1a527a918b65. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DED811770500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ac9d21a0ae1c03791d4c42780910b6e62ff56bfe484f0adf632465cb4236ea. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBPS81528349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a58891d302080e5e5b04b3d9050ac505e067c1c9be3afe0c122a8d0735acde. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/AU2DY2200024.
Reimagined for Ballet Class, Vol. 1: Songs from the 80s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c8da3923a2073005a2df044ec16a331fb3178743f39653e55d72637dece253. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBKPL1936204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a3e8a1870f730caefa836cc55ddbafa84677bd9d8991b6dd8c3339802744ef. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBMNA1810897.