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 0x132a8f5fafff481c21623621b83d5f3e22de78c3abe6ff37d4d6354f56dd2913. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a5767adf-b675-4a71-a778-cc759771dda8.json and https://artists.proofprofile.net/proofs/artist/a5767adf-b675-4a71-a778-cc759771dda8.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 0x311d702385862aad790c19a8cccc3ad73417d08bd9759166d335a71287870c64. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/ITS782400459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9c6de1e9c96d497b6b95d5f7f1d1c6a0750d13d212c8c9de8925a0b923cf751. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/ITS782400955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23efd8598220fdb55ba2b6bc82afc9166e39e231871403924a2d117f30732ca. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/ITS782401479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db9ffa924321fd0ba1ed72b9fd6d8673b41a5d3b2e84b7e90eb47cfac496a8a. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/ITS782401658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b72fd6fe8f346ddaecb525234fb56826cde3954b0bc7fc9572c0b0e41d80d11. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:20:50Z), 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/ITS782401899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x802d0759f31cb12976976bc6aff455c4809d231277d39a02df427a93d0ae810f. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/ITS782402000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce2e6b3aaf7615a9a2c6b67fd9a47a6954d73bd41347b0a028372c287786b021. 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/ITS782501195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07441a70aec92653d95be84f003f0d4fcdb463d5b375a09016abebd1f8e77db. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITS782501302.
Velvet Stars and Secret Smiles (Dreamy Ambient)