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 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 0xe3526c45c7ee678bf269205bfa8a80d243c584c01f57412628f8be21ffba2245. Chain 2 (Bitcoin): anchored in block 953777 (2026-06-15T11:52:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d110912b-79da-4b4e-b03f-9a8c49b5d0b5.json and https://artists.proofprofile.net/proofs/artist/d110912b-79da-4b4e-b03f-9a8c49b5d0b5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
585 Roc City / MPT (Remix) [feat. Txikosan & Ice Grill]
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 0x377da96d1c3b2cd84f338a1436e803e0e7ccf0051fb95ec8753443521473777e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USCGJ2390792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa896a66d4d784348f76c8ba540d2b2edf42fac0e104a8ec5db313eee2856b436. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/USCGJ2204855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c764f0238130815dbdb199424f4f8fdde07907afae60daacad2b1739dda5ac. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USHM92196366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8114bf2e7ae6bb06097222eb4de8a004573e86eb1547d4c93b24e8483276fb. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM82288004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570deba231d3568b2302b5fa3d20dbf90d8e4fb0c2a7ca8c7d907eaeb8b0f271. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/USL4Q2384253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed65dfc737df1541dd6a73f3db3c6e14961208f6bd03b49907cb1a340c68831. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/USL4R2309206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed07d7393d7d113aae2bb518b8f65fa625f695d43b4e4ec2c17386ec50fc3651. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USL4R2372991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073daf60a93591102dbbcd96d366385de01179a428bc2124ad1a4a8b2c098b72. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T10:57:35Z), 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/USDY42487148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5675757a5fff4bb3002b10096b62eb4fa6fb0fc575f7bb2a91ba2cdb162d1c06. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USHM82357996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcf320f37d93c0334209ea0591c4c704de36c06ff28962c16bc19a17efb1bea. 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/USDY42326863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a35fd96603ad195fab1460941fce31d4e916f04cdc52d8869628e426e0d70b8. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USX9P2463116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9288256101b5b7485d08c3b20866383cbe44e478536a1362573b63c2ba961e23. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QT3TB2408782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe82e0e266a14398c5244364e18b393fa632e8629baac1b4cd3d7b538731bee. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGH2532636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf02fdaa2f131e611ec1cd7da01f25dba3ede4a9a7a5c7d793011c716aa47b82. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/USDY42599765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5de507e8da93797ff69b162dc534020e458df9d6d9935252b6db76ca4aa2130. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3FE2508519.