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 0x876e7a9376064f05327569cf16dc4517ab429e735d25d3c1ffc756d7d55d1797. 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/22e29361-3bfd-4ebf-a8fc-c0d53dc3093f.json and https://artists.proofprofile.net/proofs/artist/22e29361-3bfd-4ebf-a8fc-c0d53dc3093f.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 0x9692dc4805891e1c922c2c66abd37fceafb7b62e23a33933d0cfff45c331528d. 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/US7VG1821022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84f4ce7931380880adafe1ad8392220b4a0d28d8ca578951169e23680cee954. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BXAKQ1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30dace01eebf5bbda13590b330f9f44a75e9c07774f20e9c1478ea7702db666d. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:08:44Z), 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/QZW9K2398441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb569e507ad00c0258d4c2ebaa2e520250133525e9f59b2c2c95aff46e6050b35. 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/QZW9K2398493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f931af6feb73a22a553c320b809e649691475a1b623d267aadeb3c8c99b569. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZW9K2356897.
Aa Ee Ii o U Novinha de Bangu Podcast 006
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5578a47957d9aa2d679f59d6f561ba7f8f26579b4272bf4987cb67c0d8393d0. 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/QZW9K2356817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa2f13add1a0e4aa69b71f7679bdad8bd71b8c1091d967fea67123cf90663f8. 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/QZW9K2361244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba536d68f00de6f38cb15ef5216131a64606b142f0da56f9780dfb830db63a1. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/QZW9K2398490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c58f8ef8f6fd3428839b0dbbf47db3ad4aaf3cf955615980043830be4a747f. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZW9K2398466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0264c17c83d44dba48c393852baf117d14be7b72a2a75dd80081819265ddd956. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZW9K2361231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143c72094ae330ef731ee5ce06887f2cf9296724c99746febbe2c05759da576f. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZW9K2356892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1a481a9485ea2153e4f597f0a61b4b735448d7a5fa4fe30010d89ecd572c8e. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T10:29:51Z), 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/QZW9K2398494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28abb399187c50dc1fc2fb1d0b212fe1235b394684571048180b6507a3f8c88c. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZW9K2398439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae2d22ca86dd7e1eddea9186a789aafed1fe660f29f1557f45eddb5dbb4c59e. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/BR0RZ2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8397aa15f50f1e6b6acc1cec790bc0a65d09a0647dfcd034ae5bb69677b57bf. 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/BRUM71804444.