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 0xab2170bfd5fc0f7ef747506fc9abaabe3b13fcd6dc824a2b08538fa94bec2400. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ed61652a-d632-4ced-b728-a0944d9af384.json and https://artists.proofprofile.net/proofs/artist/ed61652a-d632-4ced-b728-a0944d9af384.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 0x7ce84ed49d27066fadfb158c6b4bca323530865d567a88fdefff1aa8224877eb. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/SE5BU1874518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0977a494497b330f2cdca3b8e0815e19d9d3126eadfdb8e080e5d2158a9cb16a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:35:15Z), 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/SE5BU1874519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f24f81c9b74f00efa0ff89a257c912a2517b82f9273cf896385981eaa7c89ae. 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/SE5BU1874520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe387f57c326bb8d8017364a2fd00d1341c6d597af018cbb704c162e159c5b9f6. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SE5BU1874521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f699198a2a4bfc7523a9c649848a3bb24b4c9b6cc08d039305e218b0f5b7aa1. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:43:11Z), 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/SE5BU1874522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7410a93a56c7a3247148193a4a7d88fe933a33a8a1f47bb6f996d4e609a34ef8. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SE5BU1874534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cee70917a9bba59e157b9314ac5be085dbd38d44078d90addf280169bb359e. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SE5BU1874535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915f715c7590138ee91100ac951193f97e004c4e04f5378dd4805bfc8ed939fa. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SE5BU1874537.