thumb|right|Young male catkins of Corylus avellana Hazels are plants of the genus Corylus of deciduous trees and large shrubs native to the temperate Northern Hemisphere. The genus is usually placed
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 0x28c8dd692c4defd648bdab2f5be6bc3801133a0a482887cbffd0aca5464e13b9. 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/0fc31498-3016-48e7-b234-5f9fae191d94.json and https://artists.proofprofile.net/proofs/artist/0fc31498-3016-48e7-b234-5f9fae191d94.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 0x02e8d736f2b38124945e49e2b9517ae0d17769f76993f24dcffdc94c1ef32a0f. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:35:17Z), 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/FR96X2106526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27c18e916b0bc542be0ff20a3a5fde8d95ca6cc4461bf0ed526b19bcc689471c. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:01:31Z), 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/FR96X2106530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0178d9820f858493cd88458d5d80b243f0cfa174e1aa7350c73bedcbe1362239. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBKQU2343042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9500571f795abce7c9227d30d2d434d28920c796d58ac56a18b37606e719c489. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLXS82000043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e11fec59ae13ed969056e88e127e40f59953f334e5c11b00977817e2beb86. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PL59G2200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x471e11fec59ae13ed969056e88e127e40f59953f334e5c11b00977817e2beb86. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL59G2200255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x442e3f957c1eac51eef3de1219d765da0bf989d43a06a9bfd671dd1c4ab31ed3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/PL59G2400418.
Vibe Boutique Miami 2018 (Complied by The Bria Project)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f2dc6ff01396cd9f29cb0806dc84cd00184a300bcb64f6db45a390e0bdc819f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEY471881141.