Alexa may refer to: Technology Amazon Alexa, a virtual assistant developed by Amazon Alexa Internet, a defunct website ranking and traffic analysis service Alexa Fluor, a family of fluorescent dye
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 0x6c85abf0f7b44aa734dc021983f0a7e27557a8f97fe1f3dd2fa4864d297b1038. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/71f57c68-810a-40a3-8699-e1dcc52f5a6d.json and https://artists.proofprofile.net/proofs/artist/71f57c68-810a-40a3-8699-e1dcc52f5a6d.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 0x95326ed9d42f09fcb5694bc6fec94830b7a9d8818f81e25c1e7372c41faeb1e1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:01:22Z), 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/QMDA72443159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa224c5ceca32ffaffcb1c4c1c1a1edd0c4980e1c96d16b0e95b83882900b66ae. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:58Z), 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/QMDA72443127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76abf67f64101f0620ac7ea8dd1477c9c39aa80a834231705d578a4b1303b1a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QMDA72443128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7150d3cfd556e2f0191e410bc5b2947bbc74dd5aaa60d22d20de47c5a1aa5591. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QMDA72443130.