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 0xf14d6193e12080e6dd521477e2b49ab560b60f3c435b006283f8b312a116fb9d. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffc7581c-e978-42dd-aa30-dcb183bc8cd4.json and https://artists.proofprofile.net/proofs/artist/ffc7581c-e978-42dd-aa30-dcb183bc8cd4.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 0x0e661a81423f67a9b7007536d87745d7496fb045f816b071c4a8f735627965e0. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEL711310294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd9a1f00c2b4ff05e21dd2a4b611ad8dc43179810ae9117b1c65b21dbd51026. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:05:50Z), 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/DEZ901900444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fd9a1f00c2b4ff05e21dd2a4b611ad8dc43179810ae9117b1c65b21dbd51026. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:11Z), 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/DEZ901900444.
Once in a Lifetime - Anastasia Rose Extended Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b48d37b2e7aba52c3654dad6f421ec61b77cb1970db88e07a0f0f2dd47c3e86. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T03:08:44Z), 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/FR2X41980337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f0d60a07bd9ac850ffc250c4532ff18bd3caa1e50824eb4df4d78ca1d5518. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEZ902000204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78607b7e2c3bb46d0f2259241d0c3f686e05a100a58fb0954141d0b21de58c5a. 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/USJ3V2170808.