Cathie Ryan is an Irish American singer-songwriter, who has released five CDs and tours steadily with her band performing at festivals, folk clubs, performing arts centers and with symphony orchestras
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 0x0ad6bcab58a40d7ba7a76268468984718d17da754971fb09917d8557c9032cb2. 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/943298a5-a33d-40af-bc9b-3f2b7665a7ee.json and https://artists.proofprofile.net/proofs/artist/943298a5-a33d-40af-bc9b-3f2b7665a7ee.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 0x4d7788f6c2c089ded14c3d8ce9d73d94ee151ad88a01eac2ca995ac2b931ab3e. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USA560555718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84f068e2a6b6c21d4b7a0ffb174619a43f3d84f0189c7fb90026ec73efb9176. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA560555731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64d65b5eafc8e77458f6304eb26420de2b3ac90b1510db1153afae51fb7545b. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USA560547033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4254e501d14cf876ceb10991dc8d0439fed9bcaae05d9b206bb27b4b2a1ace. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USA560547038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa660117aa9c59bb4acc65b904f8456dc10503752e8c26926d9ff203762ae21c0. 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/USA560547040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898233711ee5ece3323ac0e155d5d1d59ecdb4b9c3f665ff1ceaa7267c496446. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/USHM81235728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd957f03e6a14ca19b4cc78d4ffb4074bdd6512af804851c4750c5be4fd343c1. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USHM81235730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54608d3a1924083e140d915c2cac3fa2e0b7cf31b226d73fc3f11f6e5a5cf3d. 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/USHM81235733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58ad24d983bac608f1bc54f3afd797f06ffb410a689120a897f43ad96fed13b. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USHM81235737.
Emerald Aether: Shape Shifting/Reconstructions Of Irish Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181402a1d398491a58b224e191074a4400f0efaa799fdf949e0ae9b0ab191148. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USA560556497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4d460d24d97ed4c67f0cc86befc91b9bb429ac69a11383ac1ea2495c32e00a. 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/USAKS0700051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f671cbc4d0b9f71fc7f1b631d9b08e912f6a18a2a728131fefe96cb87b3952. 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/USA560555712.