Seán Feargal Sharkey (born 13 August 1958) is a singer, and environmentalist from Derry, Northern Ireland. He was the lead vocalist of the punk band the Undertones in the 1970s and 1980s, and became
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 0x6ae77671b31a25c837ac8e2c6869408457dee2ef4ff25965733738e5cf0b9137. 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/c35d2297-16df-4ae2-9ead-ff6c37fb189a.json and https://artists.proofprofile.net/proofs/artist/c35d2297-16df-4ae2-9ead-ff6c37fb189a.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 0x3f2720205354ef6e2ad0b12ce11a18f20a8a08f2d9904299658269bfda4d6781. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/GBAAA8500431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dd41c931cf573db743fdab03ccecde9a84810f3df88e82bb136e75bc1051e3f. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GBAAA8500416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b2b880e6467b469e6f4f4d08b2b500d3c1f28a8d77ab65b452f53631c59fb8. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBAAA8500432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97cbdfaccb52904fe9ed095ce41d5fcea5a34c9adbaa478603181f91e5c3a80c. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBAAA8500436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd41ab6700043eeb3b84131be1ffcfbadf911b061b3e9b76f4cf7ba4db0d00b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBAAA9100683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93be43f752c3cccca2db14960d682cae960d4bdec195eeb2d9ed6ea55670e8c7. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBAAA9100385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d81a2fe7840900a1e84991acb7d1a362a492c362819cd697d1daa7e10d872. 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/GBAAA8500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1ec88c5d452d87bd6576b316cdb62c9c142cc2a65c81a5642d84041c8c280a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GBAAA8800505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d81a2fe7840900a1e84991acb7d1a362a492c362819cd697d1daa7e10d872. 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/GBAAA8500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d81a2fe7840900a1e84991acb7d1a362a492c362819cd697d1daa7e10d872. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/GBAAA8500024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65d81a2fe7840900a1e84991acb7d1a362a492c362819cd697d1daa7e10d872. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAAA8500024.