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 0x2749e146d80e15e494ab3471817e60d6ad018e29ac7c35daf1a2ddbb7584e42c. Chain 2 (Bitcoin): anchored in block 953786 (2026-06-15T12:56:12Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d98d95ec-0500-4675-a4d6-c6f0df31508f.json and https://artists.proofprofile.net/proofs/artist/d98d95ec-0500-4675-a4d6-c6f0df31508f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Father, The Warrior, The Sailor (Radio Edit)
Beard Struggle (Vinnie Camilleri Drengskapr Salut)
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 0xc851771c4050abe6c36a5a2a3c22edc50fd67229294b22e2c7f6c7371eef1e2e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZZ762407089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c5923ee20e03c0e96310b79e8023e4b9e62ec5966945bee848bb37cf4f85eb3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZHNA2582418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63cecf301b289515ce6eba9a7eedf4fc854517f6d80cb17e647e6846f31d6b8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:44:43Z), 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/QZHNB2599630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f3412767b944b8b0921484902a10ca47dd75d4130abea444e68c547a3fdeb7. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:15Z), 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/QZK6F2590524.