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 0xbab1f72fd3c348d08ab918910c245e9d8615a8b54f667c5ce7760e1224230d46. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/435d500e-da5c-4491-bc52-aa05794e2732.json and https://artists.proofprofile.net/proofs/artist/435d500e-da5c-4491-bc52-aa05794e2732.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 0x62bbc3b607ac384eb3b1db22b6a96070717656ab92b13b718388d04f07b5e6fa. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:09:03Z), 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/PL78G2200401.
ostatni raz, kiedy umarłam, miałam na sobie letnie ubrania
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdccc0a193b213321bfbbd2f046fd720d174ea33d173e08c84b4869e0907282f7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:23:55Z), 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/PL78G2400401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6b5aa21985d51644e92545a9008b1aafbd45480ab008e59dd9023a783d4e0f7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/PL78G2400402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c680f88443bbbcc2213a1b3c20faab1796eaab684c553f1d97ddd5d9e8f9778. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/PL78G2400406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x343aff1d766ac50a879242e3315c9799f161c8a7f656cc3f73cac112892cacb0. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/PL78G2400404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c0cbc10bc1c075aa94acad0895e1c0fc814149a6d594accdaed3f930d54d0c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/PL78G2400411.