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 0x1b7a541866ae5aa490c77df9293f6b153b7d669c974faf2618de7398040974c8. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ab3cb69a-c4bc-4f77-a0a2-8d5e142b9690.json and https://artists.proofprofile.net/proofs/artist/ab3cb69a-c4bc-4f77-a0a2-8d5e142b9690.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 0xbc564678b1451fc9e9f7b1f8b10e043dc3ca699111ff3d7e82bf1c718fd03479. 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/BXI3F2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd060f519b637e75954497db7d8eb3bd4996263e20152fbb889ff116504c1367. 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/BC2PQ2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f31290e6c677d0a5a28eda2a757751039ffbb4fa019571c8c5df35fa405168. 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/BXI3F2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb752449cddfee0553ae1463d270f757b0203c1919c7bfaf7c7ea77772ea1c86d. 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/BXI3F2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d37c47ace9666617d97fbaf5ec99c65168933bbc77ef92471b1a32bb4e06bd. 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/BXI3F1900025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8e1035513b6d651540c0d0c2420f404cf5d0d31134df04f768205cf9e4852a9. 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/QZK6N2066316.
Alta combustão (feat. Cammie) [Acústico]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37e980f6a3c5e80f43f9b3589a6fbbbd0702fb53a5d938c98ec7ea62516b8a73. 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/BXI3F1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba12a43e18ffedd86d6ab642169724b9dfe0e909d320dc00e37f51f034cb00e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/BXI3F1900010.