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 0x664966066aa6437f7d5b5f2747febc2cedb3f093a993649943cd72b307abc8aa. 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/166f415b-dc31-4a6a-a33b-55acf97d3652.json and https://artists.proofprofile.net/proofs/artist/166f415b-dc31-4a6a-a33b-55acf97d3652.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 0x835100f91827861581fd226ed3d7ded7c3c8237ba1e34e8d5b01fb8bf17c536a. 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/MXF152201321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fa13d4a0601a4947b971ed7a7626a630732f5191ec5ee2d38fac2877a96379. 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/BK4DA2325086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24aba37101e83f2ff8a4a732636975bf31adb26ca361dbaee3cdd1386ef0e83. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2325090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa21e86826f4c7eea8d08a8aa6d05c871c0454145cb3f0d7ee1ea1e7e4755b1. 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/MXF152301859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a57d8d893e4d48ccbd74a7d198efb1be1fcbe4ee6f85a7836781ed7e49de14. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/BK4DA2325087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1da1a8ccf53063d3b9078151188ba607ecf1b74d80d64f34e0b803afede6275d. 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/BK4DA2325088.
Serenata En La Montaña (feat. DeeJohend)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a85c4079e648f8c6c2ebc1b2080ecea4def9f53f44391bf08ef573b7c540f0. 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/MXF152301392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67bd1e81c3f017ca4e5c2131ecfcc81d2afccbac3941f6d9abc0b627bfb8bdc. 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/BK4DA2325089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4cd978943416cbfefe7fca1def8a91513dbaa15ba8accaaafcbd16989b5b27. 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/MXF152400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a85c4079e648f8c6c2ebc1b2080ecea4def9f53f44391bf08ef573b7c540f0. 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/MXF152301392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835100f91827861581fd226ed3d7ded7c3c8237ba1e34e8d5b01fb8bf17c536a. 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/MXF152201321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a371ec6ee432f3f7c282598544eb13256acadb88d20362e15e6fb4487f7592. 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/USUM72318209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e17992dd186394fa9b309802c2ec4a47382e325b4e8de61443030b76377cec1. 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/US7VG1733014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84b59d5996ef61334b3d0e2ca0b2032ca7aa34705988dff9c8b920cdc82be83. 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/US7VG1733011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb5691435e52c6b922aa640a942a24757a60cfe30f1df7583db5725ee2e3e93. 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/USWL12401797.
Los Caminos de la Vida (feat. Mañas Ru-Fino & Granuja)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9f8ff7315e75bf8eca9ebc934d7957bcb8737cceeec860fe0a68c75246fd80. 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/BK4DA2319249.