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 0x760b26c0ee116430d2cff06d55c3fe49826a3454208897e032cc311a96ca2ab6. 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/b4fc7c32-96ff-47c8-a08e-f788be55d327.json and https://artists.proofprofile.net/proofs/artist/b4fc7c32-96ff-47c8-a08e-f788be55d327.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 0x949d7ab4b5b90697bd6746d795c59d82d9c5407005621483f43bf038352b8cac. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DEE862401833.
Einmal um die Welt ("Die Mädchen-WG 2023" Titelsong) (feat. KATI K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c8e3ee61cfc602f2aed33f7e41c43dae1471159186c98e6176008f680f9451. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DEE862301746.
Bach: Prelude Piano Variation (After Cello Suite No. 1, BWV 1007, Arr. for Piano by Tim Allhoff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea178ffacaf6041392382ffdc3d1c34e2e5f95b0062e03c95cb3944216ca62. 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/DEE862301185.
Liszt: Liebestraum Variation (After Liebesträume, S.541, No. 3, Arr. for Piano by E. M. Fard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb82f77d4f9f92ce3ea5e4af56865d7d0ac336674fca93167ccf06c2fc5f08eb. 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/DEE862302023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9ea178ffacaf6041392382ffdc3d1c34e2e5f95b0062e03c95cb3944216ca62. 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/DEE862301185.
O mio babbino caro (From Gianni Schicchi, SC 88, Arr. for Piano and Cello by E. M. Fard)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5051b9fac24bada369c8845db5ceb99020a3fdc27558ff37fe9732af16ce8a5. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEE862302029.
Mahler: Symphony of a Thousand Piano Variation (After Symphony No. 8, Arr. for Piano by Tim Allhoff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfae82767c10eaa5552e32ebc538487cdc0942fb96a3420bb0a34d26404257b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEE862301203.
Ravel Bolero Variation (After Bolero, M. 81, Arr. for Piano by Tim Allhoff)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b3efb1404ffce24f531f92cba29b95b0826589690e35874915b8e0bae41005. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEE862302034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5051b9fac24bada369c8845db5ceb99020a3fdc27558ff37fe9732af16ce8a5. 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/DEE862302029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5051b9fac24bada369c8845db5ceb99020a3fdc27558ff37fe9732af16ce8a5. 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/DEE862302029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cfae82767c10eaa5552e32ebc538487cdc0942fb96a3420bb0a34d26404257b. 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/DEE862301203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30b3efb1404ffce24f531f92cba29b95b0826589690e35874915b8e0bae41005. 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/DEE862302034.