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 0x30ef46a107e5907ba62d30fe9acab7a8bbbfd31f9430a0f821010e2befd82dcb. 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/7669e2eb-4f59-4fee-af9b-ab29606ae051.json and https://artists.proofprofile.net/proofs/artist/7669e2eb-4f59-4fee-af9b-ab29606ae051.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ønsket (Originalt Dansk Soundtrack/Deluxe Edition)
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 0x6b298fed19a3cfbb38f139f4aad753d92ec66cae40676af77e05af84042e995d. 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/USWD12329519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77e4c46d2090c2fa9523b8075319fcaa4459a9511e3f3f41e2a30da2fe813e. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USWD12329522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa636f70cf269d8404ed4a207f9d421323d65b3d25691643cc50999e4ecf5379. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USWD12329524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634dfb84c53e2a0103c90a7fe133ce8b1faaf8b0a532a022cf6711b8cdd60f2. 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/USWD12329525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b298fed19a3cfbb38f139f4aad753d92ec66cae40676af77e05af84042e995d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USWD12329519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e77e4c46d2090c2fa9523b8075319fcaa4459a9511e3f3f41e2a30da2fe813e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USWD12329522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa636f70cf269d8404ed4a207f9d421323d65b3d25691643cc50999e4ecf5379. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USWD12329524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd634dfb84c53e2a0103c90a7fe133ce8b1faaf8b0a532a022cf6711b8cdd60f2. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USWD12329525.