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 0x128c323e4e0eb4f46a02d5d4d4db0d659fe8c611326086e70eca985669ae9878. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/85c7667e-de20-492e-9c57-e1b4d7568434.json and https://artists.proofprofile.net/proofs/artist/85c7667e-de20-492e-9c57-e1b4d7568434.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 0xe8dc4e3554c0e6c614b6ec791c7ae4b27e8ca3453a3c54ba7aabe87734f5b8e2. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITS042301018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff048cde6174b5cefd5648d5eecdef823abe6ce6ef38f1d5e6977d01461b225. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/ITS042301120.
Accendi una luna nel cielo (Acende Uma Lua No Ceu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82fb0d7343405e1c2135755125ff483aa504aa1698ee22c9c598c92ad8d1f9f7. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:46:56Z), 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/ITS042300881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d45ade7ede4d74e19f1422176f524bc267511429c3f3e1c1a8075d478ae6b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITS042300880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb414b2df8ef3c958920761b308a4d33b8fff332fa24c91918b65d900b3b91c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/ITI021800734.
Italian Lounge Vol. 5 (Beautiful Italian Songs in a Chilly Sauce)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb414b2df8ef3c958920761b308a4d33b8fff332fa24c91918b65d900b3b91c. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ITI021800734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb414b2df8ef3c958920761b308a4d33b8fff332fa24c91918b65d900b3b91c. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITI021800734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb414b2df8ef3c958920761b308a4d33b8fff332fa24c91918b65d900b3b91c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/ITI021800734.
Italian Restaurant Chill Music (Beats to relax)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb414b2df8ef3c958920761b308a4d33b8fff332fa24c91918b65d900b3b91c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITI021800734.