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 0x9d2daf41e97332d93740dfc78430ff946fbaedba9c2698d0d26f0106dfa73182. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c5f754f9-5002-4923-8734-ac4b4a466672.json and https://artists.proofprofile.net/proofs/artist/c5f754f9-5002-4923-8734-ac4b4a466672.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 0x7f965475d144e080307bdbeff3583193f871c8f196f0038ab68a204635e8a4a7. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:34:47Z), 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/USHM20500712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d7dc29690d20ed4a4881f2f9af9488aa64a7c6466c1d4c1a38cb6b54c3f8408. 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/USHM20500735.
Lord of the Rings Suite: Concerning Hobbits/In Dreams
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb21b1a4fe302d6529fc8bcc50274fedb59eb7e8cb666cf42520ed98d901f4f32. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:05:20Z), 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/USHZT0800010.
Loreena McKennitt Trilogy: Never-ending Road (Amhrán Duit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52103774960995581d3565811e3471319c154f37ef1b730f2819ad6c75c13904. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USHZT0800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd4cd99e4d731cab46373e6f3763d74e0c96900122af1409e8ddc2db3916150. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USHZT0800014.