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 0xda67e767ac0a26937b1a3e7125bf3efb5a669a03f53542d7228a675578944974. 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/7c8f0c0f-ae1e-4270-b9c3-acb99cfa671b.json and https://artists.proofprofile.net/proofs/artist/7c8f0c0f-ae1e-4270-b9c3-acb99cfa671b.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 0x03feab7d1ddcc0b26f2627196acfa36991ab01e82181873732160049d7b2c050. 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/CH0681703742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a32ce68f1a6b35d13e83147d365a1aa27172c44be23cd8ba213a83cd36831a4. 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/CH0681703744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b63e28a6aa6f2b1195cabe503be43b613ed4996411345dc445dead8349a448d. 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/CH0681703745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f64cfe3e9fab92182b3b975de98d8e97a973ca6add7f7f3b39cf24da1fd41. 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/CH0681703749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857ccf77654c51acef78a88321801cd11536cc28ef3df339a391a5c1ea23014b. 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/CH0681703750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca652a75299919d0cc4a1d91c6c5fe78bb28800513ef49a197724bcf1b79459. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:50:17Z), 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/CH0681703752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e950d3920e680d68bc922061afdad76d0fd43698c86eb285e43c03d71da6001. 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/CH0681703754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d4d390bd1403a57e3cb41454dd3390699a5930cee8ee3720c3b3f60a42cfa3. 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/CH0681703755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0466f894a62432b18130762041d5d0b08772d9f166c808466baaf77a73306fbc. 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/CH0681703756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d2a671e66c2652f48df1607a32b4f2b12dd5c785f7273abf2f1a53add8523b. 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/CH0681703757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a24ee4d468132aa4449bef13b08623a6459e19e2d0a44b7d1b97743d307d11b. 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/CH0681703761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a891e56186fe8ebf9bdc3a405d936eb183759315c2518e3beefcd68765d597d. 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/CH0680303127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421d9be1062569d9805ddf59eaae41d9f020357cc6ead97adf9ba37b00b3dae7. 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/CH0680303136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590659b000db062800e085ce007ca7db6d80c2b28b46e4a832a429121b295a0b. 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/CH0689902773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03493aa9ff920c0140088e5879aa3cfe80eaaefed9c2576d57be2d09d36902ea. 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/CH0689902776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555dc5a76744666d1efc9ef1e3913c2d6cfc4a1f7c04cf3534494d3e09fdb22c. 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/CH0689902787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36aae5e9f89a702fa26115d1d58c2570a451c488ad2752463648fe68948714e9. 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/CH0689902788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14539334bb858028d0a531797321817fecc9173e5d139f151a54098979070e1a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:30:51Z), 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/CH0689902789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bbb5c281412bd9b8eb43cec36fa3aacbc3714b2aa347afc5e0ef69352e2f7c. 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/CH0689502243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8169419ac02c36eeb9f031f0baf29c91ce18cada62473c9d4e7bb5cb54757e9. 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/CH0689201856.
Spitzenreiter der Schweizer Volksmusik (Immer gewünscht und gern gehört)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8730dc5fc38f215c9bf0f28d62a70b3b449b6af3b6062c3ec675dca13a1d116. 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/CH0688600714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e753ed28d3eff4a699aa381dafc67e898d0e234e2cff2f6850e1be62942174. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:47:02Z), 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/CH0688300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1070f5958f793120b3cb367eddc6dd8b4f9149ddd83e13294b75b268aade611. 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/CH0688700903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c5c65779fed3c60ce1dd5e8e4228e7fef4c29cb9af7f8a5ad4ead21584fa2. 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/CH0680803474.