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 0x5e3a834a0d9fb93fcddbc0791a54297daf739ba3e4833eded73b5956d4692d72. Chain 2 (Bitcoin): anchored in block 954631 (2026-06-21T02:46:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cd5140d4-4414-4701-b028-9338ea487212.json and https://artists.proofprofile.net/proofs/artist/cd5140d4-4414-4701-b028-9338ea487212.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 0x678a71aec10f7d7a6911cbbb484d19e3968d0ae11113f9ced7aa9b69ac821978. 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/AUGBT2211235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cfbb122a7ec579955721259672d3d170bb279a49c55988e955fd7df2894658. 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/AUMEV2023890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98348e5b47a6175aea4a4cfcfbbb26f908777d62732ea254ae17f1ed609d84. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-21T23:10:17Z), 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/AUMEV2206640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bf59eec53b57e1572deb36dc6d74c076d51a64a298ce1b5f18395eb88a9390. 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/AUGBT2211238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678360bc8037682be80caf8e18062c04b9b3fb27d6bf18bce38420f60cf01af2. 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/AUGBT2211239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a995dd518b04eeb54177f9b44d5cca44d0b2b5314d91e4388af0ee385f0b547. 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/AUMEV2147781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113d6892752c7f78e0ef8ac2424efeef8685de79424f4b4a75658b4541799c95. 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/AUMEV2023891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a7a37678567bc4b65e56dbf036c5b0a13e4b0bc29fa47be3a1bd55f0bca5c7. 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/AUGBT2211242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d98348e5b47a6175aea4a4cfcfbbb26f908777d62732ea254ae17f1ed609d84. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/AUMEV2206640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a995dd518b04eeb54177f9b44d5cca44d0b2b5314d91e4388af0ee385f0b547. 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/AUMEV2147781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cfbb122a7ec579955721259672d3d170bb279a49c55988e955fd7df2894658. 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/AUMEV2023890.
Indie / Rock / Alt Compilation: December 2023