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 0xbbac6a56a3009dfb4292c267e2bfbe6648ee84f94aecafa6d8bc440b1c19d679. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91242520-87c0-498a-aef9-a88b81bd1254.json and https://artists.proofprofile.net/proofs/artist/91242520-87c0-498a-aef9-a88b81bd1254.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 0x7bb3c48fef40696c657b145e4ff141bfdf7646fc4fb3cb38fd03eb7bb09d33c7. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZDA52510462.
AINT NO PUSSY (FT. YO6RAVEKEEPA, LAMIANAGA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ac4ab90a0a716c43dc1105e6c67fb43da8a77f6a68b7bf3b333516af15eee. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZTBB2420353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaacea1e14815bd593fad2fc092ba0c11a570340b145da57a80fc78825d9cd25e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZK6K2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff7cf11855b3f5d9245c010797a2f5f1f7a53e56762d4b5a04b76a06d02f6ba8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZK6P2486758.
Penki tūkstančiai keturi šimtai penkiasdešimt keturi
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0b18a25b65b8d2e72239621fc9e87c32477c303c0d36f3a6bc054b368e6c21. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:57Z), 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/QZK6P2437230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38404a1d50bf3882afdaad416a2be915867a011f3639b3cecc6d3a0f007f2342. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:06:16Z), 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/QZTBB2449091.