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 0xeacaad839f91e64a61d0e3579bf2a8d5ccf3c866b83b0a7fce21a6d3e6c7d437. 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/31c91b09-fde7-43bd-8a5b-cc2339c0fc0d.json and https://artists.proofprofile.net/proofs/artist/31c91b09-fde7-43bd-8a5b-cc2339c0fc0d.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 0xbe4be5e5de3002649ed56bbb704382c51d55299ea9934eb8426d580108c0304a. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/DEZC62131276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52339a2c8935be0d0d9f78571090f690a8c24ab8e8dc6b97b5bfa9aebcfed7a1. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEQR42201929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e32fa0b28122190a202f31aa25c23ee1cb026ae0619e721ac01ba065afc5ab6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEQR42201983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d8e976466664157f29d21e874ec3c07afe459b1d1b89b0979fd1c21bc316341. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/DEQR42302013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d0a6592a19ae4008a5256e5c4030c5b89d2f7c225f9f39c1a040b676d3a0c0e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CH7812412563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194ab47cdaf859764191bc6873b9cd911251fb9a8dc9f4941c8aec791ae50338. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CH7812418660.
Chiara's Cozy Little Christmas (Acoustic Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a191aecdaaab647553c9c635dff1d23bc397021153439eb5fcb397e3bd57c1c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CH7812423337.
Ich feiers Dich zu lieben (feat. Chiara Castelli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e7367f881739cb620bc0ba8793387558e91cc7fa4028c17f8515e2a5c2f274. 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/QM6N22294965.