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 0x731943d845f142f3907eee78bc32a1c565a7c4120a5d5c419ada0c96634a62c0. 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/1e49ad04-b5ea-4771-8558-94c0114cd5a8.json and https://artists.proofprofile.net/proofs/artist/1e49ad04-b5ea-4771-8558-94c0114cd5a8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ich steh an deiner Krippen hier, BWV 469 (Arr. for Violin, String Quintet & Piano by Jan-Peter Klöpfel)
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 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DEE862401830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca12808775edd1292b9cb5022c09755c8d4f072a89c911b22a0d5b57a47c332. 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/DEE862401830.