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 0xee1acc45ab9e749f5e212ace33c41a429e26d7db17f0d36d870c64700385ca92. 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/f5349b35-4e6a-4bd9-ba4d-979c1ae3c2a0.json and https://artists.proofprofile.net/proofs/artist/f5349b35-4e6a-4bd9-ba4d-979c1ae3c2a0.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 0xb19ef2bbc32f9060012e61e814eae8de723705d9eddce8fe1d4fa410104b4ed6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FRIDO2111513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06b2a48f5cff5e974aa9fefe857eb040bf2c76ebba6ea78864af011b918d98. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:00:23Z), 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/QZDA42209549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b07f99012f71c093823e15b2aca66aaa14bd1e11c01f8bd4f1e27dc265866e. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QZTV32211630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4cbc0677456672f989ac3e56f0a04c6da6c332fe41237ebd6421b427cefd377. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTV32211696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba7d4ff987c5218ff318fd9aed51668558ff2f22c521caf0f0a2727b83db18e. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:03:55Z), 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/QZTV32211770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a6d56fdd6382b32c962c30a75b13297e9082986b7d9f7a3c183614bd0e22ac. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:44:48Z), 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/QZTV32335458.
Stay For One More Night (Matt Hughes Remix)