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 0xdeac8cf71e8f68be3b60922397ff4dfc923c66f85402b5332cedfdbd5c805929. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/70209e84-1a46-4e82-91a1-e9c98c49a55b.json and https://artists.proofprofile.net/proofs/artist/70209e84-1a46-4e82-91a1-e9c98c49a55b.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 0xd69c165bd17901ff4b249cabf1bf66060889adb0adf09b6b98166e8e523ed8f0. 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/QMDA72479162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24edf6dcba39e68e8bf4a8d60223a54e4793021b551e16d98b2b260682edc28e. 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/QZTAS2419687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fb8f83c1a82332980479b34dae2e447544f1243e4e6129bc1960ad79a8d840. 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/QM6P42440292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8231ef61206d868bb2f3aaf6150b13d0c19a08e1cbe39d610539282b5535d7bc. 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/QZNWS2432934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fb8f83c1a82332980479b34dae2e447544f1243e4e6129bc1960ad79a8d840. 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/QM6P42440292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6e02fd82e2ba09ae6df32cd97b2c07d8b13aa5e3f7fc8c33a4010498375316. 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/QM4TX2451325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1041a5042a7257d4107a5b149103a071e9a7c31bf8967cffe12c0909f9188c. 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/QMFMF2305849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaf7b37c1dd3dd6336cd8eb20271c5aaed451ed72171e1e51f2f52189ad47ce. 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/QZS7J2308293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943c4d783478948cff5606bb63a1005a3ea0e5694bdbedefd3fe47517048ce1a. 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/CA5KR2207995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ace3604048a7008f4c442039a926c67fba1971a2c134d27cdcebbcc7d5f42d. 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/CA5KR2207996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aaf7b37c1dd3dd6336cd8eb20271c5aaed451ed72171e1e51f2f52189ad47ce. 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/QZS7J2308293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6500504675476cd031d97ddb4bbce32285c5dd52c7b63bbac5d6207de8a0df57. 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/USUG12504759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18ed712aff5d43d17ab0be657c581b4520db6c8dca0ceb76178b905d56e37fd7. 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/USUG12504753.