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 0x90e1b13d5a9ce17e6679ebbf7235dd9fb52c54b1c90ce8f5dc5a24b52e29e0ad. Chain 2 (Bitcoin): anchored in block 953678 (2026-06-14T19:23:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6278edaf-2a37-4c03-bf2d-0e26be030929.json and https://artists.proofprofile.net/proofs/artist/6278edaf-2a37-4c03-bf2d-0e26be030929.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 0xbe89fb2c6ecec4f28d4a0da8fb00ad688f268581e60c01bb751463ca298ef400. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/CAFEC1800191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf870597d57fc2e861f75c6273e89ae86cfd210b79fa86ffbd7e7cc6ccd4e6f3e. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/CAFEC1800192.
15 Grandes de Miguel y Miguel de Sus Amigos...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d3e347032aa43ae5ab63e241cab5a9d41018915f8af77192cca07eda588d7e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAFEC1800494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3606eb5bb2f64bf1bbb0875614d3c49e10dd713e3214a2c4dab6f81758aceb91. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/CAFEC1800500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c39d76e1596aa69317276e7beb8f3e8e74ddedb829a8bc6aa19334d6280cfb. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/DGA082322102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b3ead17bcafdddb6a3244e8cc448eb2f437bdec7ce14e925eca59cb9b77981. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:34:57Z), 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/US3DF1103413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb341ee724a3d317f1f51c5a0c0a3964dc116f272482a285410fad1094870d0cd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QM7281742826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3878486ba25b09fad8dae2d8c4a4954431b201789b5e724f5d203c31b1f001b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USA561075019.