John Sheahan (born 19 May 1939) is an Irish musician and composer. He joined The Dubliners in 1964 and played with them until 2012 when The Dubliners' name was retired following the death of founding
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 0x21242db616268164814a79b7b584e67d611c9db276462d3c96ded875fe8fc80c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b6152a79-d1a6-46b3-8587-88c96df2212d.json and https://artists.proofprofile.net/proofs/artist/b6152a79-d1a6-46b3-8587-88c96df2212d.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 0x9d36ef89e714d430359c14d5baf0a53020a9962d38e81dcfa55646c29692a9a3. 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/GBGRJ0830032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e50530b0b12504ff45d30d663142967458095750b92bd89e826eda5f4216400. 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/IEAOF0700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e50530b0b12504ff45d30d663142967458095750b92bd89e826eda5f4216400. 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/IEAOF0700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13c75e2c29367c431bcac9a113f79059be51279126fa759dc6fa033ef59c77ef. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IEAOF0700102.
Cooley's Reel / The Dawn / The Mullingar Races
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c9d9e6c1d1d15fc02fbef1f42328b7bdaf7643877f61c86d880a8278e747db. 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/IEAOF0700073.
The Showman's Fancy / The Wonder Hornpipe / The Swallow's Tail - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0913125ed5e6e852cdcd5f9b51baf84c749e28e579c477c58d42973f228f17a. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T18:38:39Z), 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/IEAOF0800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e50530b0b12504ff45d30d663142967458095750b92bd89e826eda5f4216400. 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/IEAOF0700095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f20600da37ca03ae23505ece4530966593a64c97e67045b7d8d4376b6d936c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAAS1052740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbbffa0f9256c9e9e2d2cabc3908805d139d459a4eed9eb2bc084158e20163d. 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/DEN120206451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42e480ea51a283dd82c23916f6afe7504fb0224e16952f15625c257d358f72c. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:21:43Z), 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/IEAOF0700050.
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
Solen er så rød mor (feat. John Sheanan & Mathilde) - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c054713b053a32a68492f2664784026e313b6a8d49c4781b665d0f0e382e007. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKAZA1401168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd358d33f7cebd44fa7def50910e3be4606957115d4158f3493d3210918f4c849. Chain 2 (Bitcoin): anchored in block 960113 (2026-07-29T13:38:16Z), 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/IEAOF0500005.