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 0x20e450819e837143026976e95410faeb18c0dc59e984061a8ac6e5ad2bee221c. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/54def59a-04ca-44e6-93d9-edf7b7bc45e3.json and https://artists.proofprofile.net/proofs/artist/54def59a-04ca-44e6-93d9-edf7b7bc45e3.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Roses of Prince Charlie / The Rowan Tree / The Rose of Allendale / The Swiss Highlanders / Chueglockeserenade / Jameson's Reel / Tache of the North / Scots Wha Hae (Live)
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 0x2e3459541c15842e5160f206d54b238344431956f85b731c275fb650961ba9b8. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859840 — a six-check JSON result.
Highway to Hell / Sweet Child of Mine / Smoke on the Water / Thunderstruck / Fourth Floor (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29164b5358887a33edf69deef7b2f926dc35b5c0fc3e41e0ff4ef303cf9f145e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859847 — a six-check JSON result.
The Parting Glass / The Shores of Caledonia / Celtic Crest / Highland Cathedral / Amazing Grace / Scotland the Brave (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f97c473d77221cd3e1e9f6c1498d121ee68a0c86c32a086c0337fdf0604a002. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859849 — a six-check JSON result.
Empire of Angels / Kill Bill / We Are Young / Some Nights / Drumsolo / Intermezzo Alpino / G.T.S.T (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b68a989aa3d5e5f8b5087a48d6ecb1c7f1338f0e53df3713288c90e26b638c. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859856 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb564e1564926918394cbd000466fc61b99eb5f3a76dc82d9286d4778ee146eca. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859857 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b700a5d9ce238db021a042262b694c71a6017a887b41dea1fda9293eec96954. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859858 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4bcd53ae49386392ed68799e59453e4a1d577771cb0a2cd44a9fb25f16e173. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859860 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d5cb5d41a1a0b987dc7fa9ab8dfb846e0243d865f33239a619dd2d3efbae68. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859861 — a six-check JSON result.
Und Tschüss / Auld Lang Syne / Blue Bells of Scotland / Basel March / Scotland the Brave / Sarie Marais (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a229c6546c4e6a111bcd30a5c0395a42ed2affc65f9707bfc4e8cb4e3c58ed4. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/TCADY1859865 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f9759ed5a8d851961f4364aaf92b04f9cb16ae5a47b4a515d7527305c81fcf. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867171 — a six-check JSON result.
The Walled City Suite. Based On Londonderry Air
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975c4838c860c799d678b7a5226a80219fc1dd1472473c639d1963b90d3029cb. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867172 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe0c80148991c537da8eea22286eb2c624fa5636096103c67d5a64d99b8b4dd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867173 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4654fe2cb5502b733b4ff69a0c0fbde3894f163443a526d4875b076ab1422652. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867174 — a six-check JSON result.
Irish Folk: When Irish Eyes Are Smiling / Whiskey in the Jar / Wild Rover
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464cdf41ddf369eabc86d775a59be353cfcd2e35092ff16bfafe4959f8423b35. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867175 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423d52cd5c874d79ff7e95be10386033950ee9848fe658cc637d839f487b8df7. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867176 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2af204deffb5831b12a62fb39b63a84e2715c5e93bb96af002d40e94618b2d50. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867181 — a six-check JSON result.
Polka Party: Happy Days Are Here Again / Im Örgelihuus
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7323826914daca41d0e4a8ce8c48ec5cd7631cfa600e9b5f1bf6ed4b91c6d89c. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867182 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e4ecd22336be518df74c35c43785011debba3a84eced7092c26e1acde4cd06. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867183 — a six-check JSON result.
Best of Beny Rehmann: Drescher Polka / Schiffsfeger Polka / Am Stammtisch / Wenn du meinst / Oh Katharina
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7a374cd8ab4e5317c109fb7f8d8a851b05c310de7eb3245d35d977c64db9da. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867184 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5df721c5b122a83b1eae72b2968525b4328ddc1ebffd6cfddb0a5a9c0c27a5e. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6540867186 — a six-check JSON result.