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 0xc6ac4672270b437db5ac3744429d4a571dd197acd3e4353d18f244f19b232ede. Chain 2 (Bitcoin): anchored in block 953817 (2026-06-15T18:10:31Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fb061109-db02-4904-9470-e691ed688661.json and https://artists.proofprofile.net/proofs/artist/fb061109-db02-4904-9470-e691ed688661.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 0xc3c36aaca0882319dc3371beb53e1435647c850b61aa6416538ae1163c12d042. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/ITB551815326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fdd6b267ee2cf41a1fc7fbaf94be7891b13acc749be8a23e0fb82405c0d3206. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:53:14Z), 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/ITB551815327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e308694227ef8e20878ca3ef9b23c03b2b10dc433306ae2dac8feb390a543dd. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ITB551815331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c45d44537df927cde4b32cd2f6e4d178b7781a751d56c5be36e73756673ad1. 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/ITB551815332.
La banda dello Zoo (feat. Boss Doms, Don Joe, Gow Tribe & Dogslife)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8ca142387e897127c403bfaac7e3d4b239f2bdf4961365fbc04c0e87ee6fa6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITB551815333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe024fd958bdace59adffea93c828f38edc40d6accf08973b9c2b29abacab6e37. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITB551815337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7bee22e9f1571d65ee53d9ef069ccab1b4509b570bf6a64b1ffe284858d2e6. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:34:26Z), 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/ITB551815343.