Cathal Sean Hayden is a Northern Irish musician, acclaimed for his skilled style of Irish fiddle and tenor (four-stringed) banjo. He was born on 13 July 1963, in the village of the Rock, County Tyrone
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 0x97af14841b20d34a96497429ef69aa38305238efe2701f142c3bebc4d46b0f15. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cf615ea9-b495-4564-9f2f-bd1603307e19.json and https://artists.proofprofile.net/proofs/artist/cf615ea9-b495-4564-9f2f-bd1603307e19.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 0xae0d0cd30567ab63e3db825db541e7c5ca6a9316e98e49a5ecc26ae92a400a64. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US6860500285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc8c1331896232078ac53ce7983c4cf3081fe1bdcc385a6a7e916d93e7ed969. 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/US6860500286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25ca26ab9d9e42f902d2d454ad9b80d977d884999acf54096330966f51e8150. 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/US6860500287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738983a6b6e468453d72431b1ab577fc62f25ef2b9ed71e6fcd3cd78e253d794. 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/US6860500288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e181824e460f9ac60a97b5131a7f1f2461fb0f7e70ce464df1f33d17f13f4ed. 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/US6860500289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6de18b78b2a18ce92081fee8dc879e4a6daee171a3de67f5a35407e9ab3440. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US6860500290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x468fe4d74a62da9e3ecd89634221899d6bc79b9f4d8a13db52ef6e9109cbc27b. 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/US6860500291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51803a200b8a09f26e05a4803489663f8b05bd139e28f7c9cfd1c2b4fff762a5. 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/US6860500292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0810b299cdad54b3e69adbd4a6e678ac375f3b801f3a77fbe197ca91bb2e0ee. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US6860500293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71ceefd846972649276aff6fb7cb24fd61cba1ec0b2e78d4f1215e9bfa35bbf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US6860500294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0e7a707824426fe4fd6c4dd7d85ece91195a2296d09340af8a7bcd003d08bb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US6860500295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983450fb80cb5ee4f2193235c517f5a424f941cc90c23d5f86441d36feb77819. 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/US6860500296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa6e0332176b276cb5e1474879942514f04c3340b36b298bfd7b0917b84ae93a. 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/US6860500297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01b7d4046af700859e00eb68d90e02a303b327701edfff3bdacdd12d791716fa. 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/US6860500298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f0f1bd321b2b9f53fecd448c52416524163b75d99bdb971325af2f311989d91. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US6860500299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c78b4feaf0b8759a11ec62a5c109d25f994113ebbdf12a6b229700a029d44ce. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GB52E1001901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9122e6fcf6a791afe5f5da400caf104e9b9c310c25085ce4591000ad8cadf52b. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GB52E1001902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6541f84a2ea4558641416b68756474fe95bb76b9ff7f4612b42be4dce7a29024. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/GB52E1001903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65b5637a9d96e8eee7bc2d281fb526e644737ae24761dcbf4582b51444e8486. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GB52E1001904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b298b3bea36b4ad3f53e15986e9997dc0958fadf86ab6055fa7ca3fc02149f2. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/GB52E1001905.
Mary Bergin's / McFadden's Handsome Daughter / Unknown
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24c546be726131c1e719939626cadd60565f5b555d638a55c023e7495dcf5ab. 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/GB52E1001906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed10405e4182fc321861f18dd7b00dec8aef2eba38c3b61876268208521b07b. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/GB52E1001907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf50617c18c308094ba3f51207cd6e0c4dc2de019d9b69d000f304d834138bf77. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GB52E1001908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec71f8fd5a2c3301a3fe6ad94f976230aeca08baa77ead3741c167bd903c6127. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GB52E1001909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4af59c15ee9a74c4414b7323eb7849b8df716b3dafd027374e5094612cb266. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GB52E1001910.
Cherish The Ladies / Charlie Lennon's No. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b371203f6224c91806c99ac1dc75794672bca9e2a91dd19555b73c4e3f4707. 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/GB52E1001911.
UnKnown / Master Crowley's / Jenny's Chickenss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1d02f76d5dfd5508d43d067896c48dd9a6637f79a066bc52300dd021b4ef48. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/GB52E1001912.