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 0xf0ceb0188da55f55cc8a4bf2b1f897463e1025fbd27a62e0ddbb5cbc3ce7a3d3. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/357b911b-3b66-4fa6-84a3-8e923ac7f5b6.json and https://artists.proofprofile.net/proofs/artist/357b911b-3b66-4fa6-84a3-8e923ac7f5b6.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 0x275ad6f48052552bf96f921ef4b0c993a6efe1f68a54067d82df5751d06b4425. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/ES16F2400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba57e7718b05e626c6ab091d434953a3bdb6619d98e13b78c46b36a4053bfa5. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:43:54Z), 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/ES16F2400245.
Pomba Gira Cigana / Mas Eu pra Chegar Aqui
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc090a4767a5c9c0783edefee20de8880396e828cb1c3eef344ce3a1dbbe1b1c. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ES16F2400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431f4487eb369ba4815480dea0bea122bde5f2558221559fec9f8596764ba1cc. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ES16F2500276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09e46f8dd26ad7320cb1bd435a4ec75309f045ad0c080aece61b97c1e571394. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T23:03:03Z), 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/ES16F2500277.