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 0x9167247af94dbaa786558d4c05c925e4a562e773f7a4ffe39752bd20b4a2fee6. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b27e7248-5732-4c9a-9275-eabc240cc952.json and https://artists.proofprofile.net/proofs/artist/b27e7248-5732-4c9a-9275-eabc240cc952.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 0xa043ac9127212146728c4c2818722445f0419cfe942dceb535ee612073ed8032. 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/BKGEH2300073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91cc944eaa444d3fc3f73c45b522c4fd8fb02e8dc387fced4679d2db3dcaefe. 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/ESA112563133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd0e6b7b113aff610ad1dc218abfcb8d7fb5d8bc82d2a9e66ddbbbb7cc284b5. 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/ESA112428368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67d1454c74b6b9e2e83247fd42f6c593498714b8a036186265b5600d6ae8d659. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA112570145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e0f24f11dda6a7b77d498de184b38805e8f8ad8fef1aed8a163339d6442aac0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ESA112569665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa054536b366cda2b8372b09cfb861e6eabfd45daf2b08cb40b3ab09a7e864ca6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ESA112569453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfff90c97d338ac6cf2cbab5d5eb8a646524134a8414041ef96e8c24cfa5720c1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/ESA112568905.
Ela Toma de 4 X Senta por Cima do Teu Malvadão
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598d224f19cdf2aa1b675a11ba72549ba672e5bbca51b0931e07020ac79d9419. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ESA112568774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b8311ee7b02fb52f6ed895b57acb93ab5d23adf307d4ee9a79586e5168d322. 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/ESA112567539.