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 0x28dc6c2f2611aa7f164dff28a8124d6dcd0108e6d31c94d03cc0fe9832f5a831. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91fae0ef-d772-4571-baf3-102549278b4a.json and https://artists.proofprofile.net/proofs/artist/91fae0ef-d772-4571-baf3-102549278b4a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nostalgiatrippi (Kai mä oon parempi nyt)
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 0x60e0880d6e2327250db33b5b768b983f2aa83a0867b425d9b2f419f4baab6ab9. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QMDA62230593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d796736297e4ab3710138e47e311bb5f4aea988e0ad3aa804604e5206400b32. 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/QMDA62230594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4d1bbd975efeeda99533374e1e49a5fd0d8ca4bd843a343944fcce34af6d03. 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/QMBZ92286095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9f7000837bf3471e26bb06a1f0854f1d7110eb5234ea832eb508ec342f9ac7. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:52:02Z), 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/QM6N22252645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2993a56874541021950a46024de7f1eea95530e6dba09cbe674416cbc6bebe6. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMDA62230599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32c9b3b4924463dc8f9f05df82d6c79b24bad4deec0093138212213006ea6dad. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/QMDA62230600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131dfc6c74e91123129e07bd8a6b4b580c7b99c1ce7b00ee4f2f8e39958c53eb. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FINNF2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced80af2e84020f562c3001ba804c9f2f1af3e5209452cd5e1e3cfcbc1dd5e4. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:44:31Z), 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/FINNF2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x131dfc6c74e91123129e07bd8a6b4b580c7b99c1ce7b00ee4f2f8e39958c53eb. 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/FINNF2400001.