Desmond O'Halloran (29 August 1940 – 28 September 2019) was an Irish singer and musician. Biography A native of Inishbofin, O'Halloran emigrated to the United Kingdom in the 1950s, where he enjoyed r
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 0x9d91846cbf2c3fb32d0a02a2a81739c549d86781aec1ab102aaa5c8476496646. 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/b233f36e-c418-456a-bc0d-162b8473ed9f.json and https://artists.proofprofile.net/proofs/artist/b233f36e-c418-456a-bc0d-162b8473ed9f.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 0x48a5d76a65d7ab4cc9cf7cc405a3b28096db3eb3e3703218f1fc3b136390dc51. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/IEFJB1100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4678b3790b30cad6219742602bfd423497a565307ce378fa41f83d16eb48868. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/IEFJB1100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ea00b22a99fe181afab33d667bf43721c26007d6ddf9620e55cb42f448e926. 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/IEFJB1100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d27dcb1d7405010c083b2e2c4aacc8458b991dba30b711ebb8f542cee56f046. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/IEFJB1100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad340c12f2881fb378c2749a59fe87ab49f2278b6c80c613ba3e2c5c5e6a7914. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/IEFJB1100115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d09ee88629cd9589b9a3f249e79dcab7696878c5a903024e17f85cc4079e65. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IEFJB1100103.
Come Down from the Mountain Katie Daly - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca5912d55fa297daaab457a62f028e43534132e67b62ccf782e7e9bbda290d1. 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/IEFJB1100136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9653cc08392b1dd73e27e7ff00ca30ff232c398b7766b4e4aa9c92a6eadd162. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IEFJB1100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d09ee88629cd9589b9a3f249e79dcab7696878c5a903024e17f85cc4079e65. 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/IEFJB1100103.