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 0x55f8c59afc330370bf3ebad8d6c8f6ad9f63299219dd0aefe8ace29b7804b500. Chain 2 (Bitcoin): anchored in block 953709 (2026-06-14T23:31:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c834093-b891-4661-b9fe-f6bd55bf3b3d.json and https://artists.proofprofile.net/proofs/artist/7c834093-b891-4661-b9fe-f6bd55bf3b3d.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 0x319479224548c6c0ce3c95256404c5d43c614e84950d5a8ef0f1701e47b63694. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/ROB010800648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8266675eefdf9698807ad90c7024c7f5cacbb30dfee9ebce9790991cf713e51c. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:40:16Z), 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/ROB010800657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68e6b755530ad31b5000962aeb557fd03d1760a9ae7dea31caa56f2e3e51553. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:21:37Z), 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/ROB010800660.
Se Duc Anii Mei, Se Duc… / There They Go, My Years
Omule Cu Calul Bun / Man With The Good Horse
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a9d6c551caf32af5387bc9ad5c5ce5910382a1ffe4b2fe0a202d9434bebfce. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:32:55Z), 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/ROMSA0600249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a5faeef4fbf176293d52d8cb9010512808550265c71e5e243bcc529ee6ff22. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ROB011671747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7df5a9b0ed9f4e58c3f250be538907406f6a5f6434898c509b1c56a3806b32. 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/QM6P41469737.