Dermot O'Brien (23 October 1932 – 22 May 2007) was an Irish céilí and showband musician and singer, as well as a Gaelic footballer who played as a centre-forward at senior level for the Louth senior
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 0xe9ccc63796d92ba90d45829de31a11591ada719fe4652b7d46a2aca51108b70a. 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/6de74204-b816-4e6d-8422-492197c8ac20.json and https://artists.proofprofile.net/proofs/artist/6de74204-b816-4e6d-8422-492197c8ac20.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 0xba5db954d70466df1be8840f80de60efb8eaa521304ac5d524fe0da1d52ba170. 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/GBLGL1244655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a3d4cc8d4223dc5559bde8149ffb6feeaebd326ebe27c4f4a609c5d7b94b7a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBLGL1270813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73fc1e870c71c0e5ae279b71e4fc46b4ed80cd59e13f4298a71def1b1ac34b9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBLGL1270814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a146fd18b5d85e9a027ede5498a46bdcbf0221afbff3d3369d1de56a62b7d15. Chain 2 (Bitcoin): anchored in block 959355 (2026-07-24T03:24:16Z), 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/GBLGL1270825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779be560b294ce13aa69e21cc68352d8ee02042d3b252333d3750b58202f9898. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBHFP0401763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc82883208b1a32f1fe91dd0396200008b36ce61ccef4387a42ce8ec39cb7eec8. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBHFP0401759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6079b78c706c9ecabf03a426dbb49201a6209264196369a2e975be79b07e6fa4. 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/GBHFP0401769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cedcd940bdaf618f4c2f1621dbe9cce8c384c56a5f02f3ad8652a52d2884556. 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/GBHFP0401771.
Dermot O'Brien - Celtic Accordion Master
Accordion Cocktail - The Magic Fingers of Dermot O'Brien
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bacf9f91314e9eff5e56fdb6d5205a524bb012a345364441cf87b0d1a0715e9. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IEFJB1100889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6ee4d381449906bda69a1f6a7f4fe2bdc344d00290647bdc3c8c30fc98831c. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/IEFJB1100898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76e9873506e594c08b0c00c54a6cda431b2eb04202233472e5238d4411c7ada6. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/IEFJB1100746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc89e59302fbcd7823156f837040c5f55e2b6aadf86dc22b8df8cf6b5e3287644. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/IEFJB1100747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fcf62a10fb2578e4278f52d5a1a738649a9e12a5ab2a6003d55c86083ac3c3. 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/GBHFP0403591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da6a648ef7b104f3bb29d8093c3529038af510343d9ef1296e37452f752e274. 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/GBHFP0414049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7392f486e24604485334798e5de321db4fb46773c5e0b7cd3683f7f6b42f18. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBHFP0414246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058f373d3def9521702250da453f088d108984ae0b978748d937f7d7a19b5b78. 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/GBHFP0414243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165196e94de507ab9be172b9ce0293e8812aafef68fbb04c872f0baacb841828. 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/GBHFP0403365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81f8b2c359c29250b44e67ee7ec3af0b0665ccb13be6eb75dd7a585ff4440ce0. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBHFP0414226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b249dc324dd2a87b0b0afc4d8e1d4da3c817bc50b2625b13379594f63933c0. 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/GBHFP0401074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6fcf62a10fb2578e4278f52d5a1a738649a9e12a5ab2a6003d55c86083ac3c3. 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/GBHFP0403591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7392f486e24604485334798e5de321db4fb46773c5e0b7cd3683f7f6b42f18. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/GBHFP0414246.