1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x09aea4a502ef72b395d076cc09b33e5be0b2d877b5c18c6dd24733dbdef3699c. 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/4bad5bc1-cea9-4a22-8c10-61a44fd68bd1.json and https://artists.proofprofile.net/proofs/artist/4bad5bc1-cea9-4a22-8c10-61a44fd68bd1.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 → block OTSBitcoinBlock must exist at that height 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 0xd74d099ba4b573ec81deaedf7ad8591ac82db8726e21eb3e78f2d5bbc4c06205. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6541719751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839c3e3b2af7e48d928610c6efd1bac54b5cfcc753631730ece8753636162ca9. Chain 2 (Bitcoin): anchored in block 957583 (2026-07-11T15:53:17Z), 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/CH6541719754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0302158117a4a0aef291f3cf12813b4f8f9754df714c026cacb09b830a0a26a. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:43:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/CH6541719786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa0f00a0568675f0bd6a43cfad439acbae42417340e36b7621e72300a21da3. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/CH6541719788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf42dd346b31b5937cb105d48eac63574d67f9a8475a0c625f5c7d494c5a099c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/CH6541721536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecfc0cda411730e88b70f5d3bf3c97188fc1346db958ff3f7fbd61f0bc6a5d01. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/CH6541803825.
L'ala d'Italia - Edizione Del Centenario
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6962841b9f8e1b52b4f3f27d8779cf4eacd3ba7ab624b72b1fae4a723615979. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:15:50Z), 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/CH6541803831.