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 0xf481ba610a0eceb2f21f7b7e4d872f6bb94160f6bc1ff28ff3395029229f8f45. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53db5747-841b-4cf7-b996-36f0b6f10d3e.json and https://artists.proofprofile.net/proofs/artist/53db5747-841b-4cf7-b996-36f0b6f10d3e.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 0xdfc85cd185305d840e996ed6b6c7e91cd7d1984d4f0d51740ec9fa9f4e6c496c. 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/TCACI1527567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d33e4f31ce2a09c70233a8b3fc9a083bb8eb11316c31618b6d05fc13e4c31bf. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCACI1527524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa949f72cf94a1f37948c81c8a41561317f027f184e06fe0a0aef20c7f98dfe97. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/TCACI1527244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3f498e9b7e1ea21ef3c3ed4615a4be6057646a2f96495e7c4addc100a4defe. 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/TCADC1795090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707f8abe7267fd290f8f548a251783469dee44803c4a7ca15976d000393a7fc5. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCADE1716603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee328b7599b117823f724cb65db81df73e90df8eec0a9d00b199379d3816f0c2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/TCADH1717655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd495bee24243a0ed09370522ddbe74c7892e4b5b3f065d406b4d0d113d554920. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T10:18:57Z), 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/QZS652280114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a50753c81640bd6b0e60800ccc4b3b456d3bb3927e8fc4345fcbdf2fd31329. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZS632392893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9770b02d8d6101ff2e94ca33474c2d16e031cef9e07f29bb9968b05c33153f. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USUG12001765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f070955a63e7ac557e3864c282bb7ca9b54d97ec6bef648bc1a234ae6ab5e3. 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/USZ4V1500259.
4 Real (feat. Ty Dolla $ign & iLoveMakonnen) - Drezo Remix
4 Real (feat. Ty Dolla $ign & iLoveMakonnen) [Remixes]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cedabfbc9d2d60557e43609bb9fca5bec5237d607d9433c866b15ede680792. 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/GBKPL1664126.