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 0x7c2b1d8bdcf7ec0eb833dbd1fe7034d17d6426b8919881c1f63affe479273072. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c6f17cd7-75fb-497d-8c1d-0704dffeef92.json and https://artists.proofprofile.net/proofs/artist/c6f17cd7-75fb-497d-8c1d-0704dffeef92.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 0x17721c305df1036896e2cea680aedd78fbf87a4eb33961e0b560875fcc3cdef9. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QZMEN2201725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fe57830a9e13fb56352041d77a0706d199cf14c13b1506cdd75b7f9a78ddcb. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZTB92210396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb086d0a0375ae4b2906987f524fb437cb942af0229ec35b442b67df6b85c00a5. 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/QZFZ32318761.
Brick Onna Counter (Otb Pablo, Maz G, Ad Huncho)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8260cd004c46ea1dba8c9e9bcd6f4e595673edac90550699892ca6e4298a072c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZES72307717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85049d7f9720a314e25baea0a48bc4f35ae1c934f4a30ae4c4d4d41ab56073b6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZHNC2371015.
This Is Not The Album, This Is For The Fans.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c7474e6583da0c924b3e85a1d3628291073a62da6af03fb7badd9fff10740e. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZQAY2498639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7a1091416a4229776a15941ccd0b521f0d5d0115aec49d432564d8212d2c1b. 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/QZQAY2407562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fbbf5cd4ade456e266a67c6ba47823ba21c30e7931158072b921f8bfb274ee1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS7J2426303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de63fbb815b01ed1c91a4e7f5d22194aadcf8bf341a6e0d3367d51d02cc3194. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZSYP2424855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60971bfd138dd30faabad76f3cd5340e8be6f92d195a1a41be8f48d7b9a2e1cd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZSYP2497092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6502af184b98ca5e51ec624e94e72992565a3d2707311c084e360d10fc429. 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/QZTLA2474812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a7a1091416a4229776a15941ccd0b521f0d5d0115aec49d432564d8212d2c1b. 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/QZQAY2407562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7bc4d6109b30c943b89dcbd2d5688d9ee66d7984bf577134f0c1a242f8e3b31. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZSYP2467815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc072c29ef118104a885f4463d3cf4332399faf6b45f4efcf6904ce6cfbb3cc6f. 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/QZSYP2416435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2177eb0a1f977d9baff9aa0dee058a6d87b6ef6cce9945e89ac06024856f2764. 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/QZSYP2448429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc8795ae63db642ccfb6bcb282d43b692b98175af3f972ec8ac3131b7d24d23. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZSYP2426580.