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 0xda859e531990ff6158770f4910de917390443a14e905e1b504b82cc7673e0530. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/560d1a01-64fd-41a5-ab9a-b694c567ed97.json and https://artists.proofprofile.net/proofs/artist/560d1a01-64fd-41a5-ab9a-b694c567ed97.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 0x23887ff8b1a0b46a4971994b46f3ec0802f927a17b521bc1096669d976d20357. 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/USG2M1100175.
Tu No La Conoces Bien (feat. Wences Romo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x081d89e64c3b393c42d6c3cbcb2034dd249606f37f1ada76a16755e06a3e8b6a. 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/TCACE1535420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894966d44c02c9b0f05f5910b5a77c48e18a570441d9173a6a80f006db00558a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/TCAFC2024216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90f8fcd7f43d9293f6f0375e24e432432cf16b09df8d1b60171b46b836933cb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAFC2024273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb81606c215ffca78b2d04b945f1c18dcbed6ef8002911407c71d707d9cdef7d1. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:24:27Z), 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/TCAFC2024288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd8eed9c4b9f257ad6de9c31d12744930f2d8e295fbe1f8000279c5db5a02a5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:36:22Z), 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/TCAFC2024328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d05c189b8a8aad2acf2c8fabe3e4b2245c53c8e8a876e448602c7d727980851. 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/TCAFC2024357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0c1253bbb64acdf6bbba69f049fe9b2e17b72d6e9715c2e815ead674ed1245. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAFC2024369.