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 0x6aa5d3abb0178823735142344479f8078359231008fa16626145b1eb51fae3e6. 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/fd8f35fc-48a5-4fb6-84d4-81ed3a52e226.json and https://artists.proofprofile.net/proofs/artist/fd8f35fc-48a5-4fb6-84d4-81ed3a52e226.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 0xad0881a147455074f53306c8a374645eded240329f7efd5bb7139a942284c501. 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/QZHNB2261614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ae864d32818494570e390194eeb6021cbf0feb7a2af3e074b2dc098f770235. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6K2275395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b56e9bce43781ed72b08b3ee2baf18082e9d8d13612dca59d72d91a5f0cf706. 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/QZHN62404605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb40b1822f51d4e136ae9f8b426c215bed64451d116349ebf6204c540eecae4e. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QZHN62404602.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca0369fa6a5c065e82cbac4475772a119bff3bb91f0b9b5d2829b561001b0c8. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QZHN62404603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54bcb66ac2f0c71f9b66e992a2f069ddf9d551188c3cb1ec322c95e93049676a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QZHN62404606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae196408373d95572e0dc1e1a261195c5ea39a74cc50257b6788f81e30df22b4. 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/QZWDW2414340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab5dcfad30c666c7d406c5f087805f67eceaa530ac7560765e654b596b638ed. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QZWDW2414341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b7a25ee6e6b575478edd59f36e563cf168a73bf7adced2f50607df45e97730. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZWDW2414343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831c718d743b9b6c69ae14b627744760b46e96383cd436a05c2683e8f1a0d733. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:38:34Z), 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/QZN882581403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce55911f06dcff17886fd57772e9ec95f3cd910074e0778e86839f8514834e9. 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/ZBEX02300006.
Mexican Bounce (feat. LeeMcKrazy, Tshepo Keyz, Marcus MC, malume.hypeman, RIVALZ)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f935b94901f0d4431044c7ecd5ec6b0a8f1bdc38c01ee212140f3a48662527. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ZA56E2416020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1d11d002abb9e9ac9841f1855e9800cdb52ca56418fa30259c1ce0acad2d90. 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/QZWFM2349586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc2f69981767fc1f46f799c573c6f78d823871e7f073576775ee225a924b7a5. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWDW2430905.
Bathelele (feat. Al xapo, Optimist Music ZA, Leandra.Vert, Seekay & Chley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde2d41cf4c1d7d3c16b894b1107a5c7bb539cebab393a3e239989293aa4e0beb. 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/ZA56E2416685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ed3bab8689f4a13096739bf2278e361e8462728a6ee9eb67842154bdf47ffd. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/ZAC012301470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5313f27e7d710d0883745acd7ff83695c00631a149b75146fbcc21fb6ebd86. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USA2P2450095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x421cffc1c7c3368264845f432c4c10ee2f4c2892d98806a60df4b8c0ef7426b8. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZWFR2328633.